{"id":9199,"date":"2026-01-12T07:19:50","date_gmt":"2026-01-12T07:19:50","guid":{"rendered":"https:\/\/aborrego.inscastellbisbal.net\/?p=9199"},"modified":"2026-01-13T08:16:38","modified_gmt":"2026-01-13T08:16:38","slug":"configuracio-dovecot-servidor-de-correu-entrant","status":"publish","type":"post","link":"https:\/\/aborrego.inscastellbisbal.net\/en\/2026\/01\/12\/configuracio-dovecot-servidor-de-correu-entrant\/","title":{"rendered":"CONFIGURACI\u00d3 DOVECOT &#8211; SERVIDOR DE CORREU ENTRANT"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"9199\" class=\"elementor elementor-9199\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0f1e8c5 elementor-section-height-min-height elementor-section-items-top elementor-section-boxed elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no elementor-invisible\" data-id=\"0f1e8c5\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeIn&quot;,&quot;shape_divider_top&quot;:&quot;mountains&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 100\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" opacity=\"0.33\" d=\"M473,67.3c-203.9,88.3-263.1-34-320.3,0C66,119.1,0,59.7,0,59.7V0h1000v59.7 c0,0-62.1,26.1-94.9,29.3c-32.8,3.3-62.8-12.3-75.8-22.1C806,49.6,745.3,8.7,694.9,4.7S492.4,59,473,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" opacity=\"0.66\" d=\"M734,67.3c-45.5,0-77.2-23.2-129.1-39.1c-28.6-8.7-150.3-10.1-254,39.1 s-91.7-34.4-149.2,0C115.7,118.3,0,39.8,0,39.8V0h1000v36.5c0,0-28.2-18.5-92.1-18.5C810.2,18.1,775.7,67.3,734,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" d=\"M766.1,28.9c-200-57.5-266,65.5-395.1,19.5C242,1.8,242,5.4,184.8,20.6C128,35.8,132.3,44.9,89.9,52.5C28.6,63.7,0,0,0,0 h1000c0,0-9.9,40.9-83.6,48.1S829.6,47,766.1,28.9z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6b336b4\" data-id=\"6b336b4\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-16f8ff9 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"16f8ff9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">CONFIGURACI\u00d3 DOVECOT - SERVIDOR DE CORREU ENTRANT<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc12efd elementor-widget elementor-widget-spacer\" data-id=\"cc12efd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63212e1 elementor-widget elementor-widget-spacer\" data-id=\"63212e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-e7ce100\" data-id=\"e7ce100\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9ad5e79 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"9ad5e79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-float\" href=\"https:\/\/aborrego.inscastellbisbal.net\/repte-2-2-makrosoft\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Tornar al repte 2.2<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-11e2412 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"11e2412\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-27145f8 elementor-widget elementor-widget-spacer\" data-id=\"27145f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bedce99 elementor-widget elementor-widget-text-editor\" data-id=\"bedce99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 1: CREACI\u00d3 D&#8217;USUARIS DEL SISTEMA<\/strong><\/h3><p><strong>1.1 &#8211; CREAR ELS USUARIS<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dbf30ba elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"dbf30ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>useradd [opcions] nom_usuari<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eeca4ab elementor-widget elementor-widget-image\" data-id=\"eeca4ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"666\" height=\"127\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_044-1.png\" class=\"attachment-large size-large wp-image-9206\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_044-1.png 666w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_044-1-300x57.png 300w\" sizes=\"(max-width: 666px) 100vw, 666px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7fb0686 elementor-widget elementor-widget-text-editor\" data-id=\"7fb0686\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verifica que els directoris home s&#8217;han creat:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fde7f6 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"2fde7f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>ls -la \/home\/<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1086a7 elementor-widget elementor-widget-image\" data-id=\"a1086a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"538\" height=\"205\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_045-1.png\" class=\"attachment-large size-large wp-image-9207\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_045-1.png 538w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_045-1-300x114.png 300w\" sizes=\"(max-width: 538px) 100vw, 538px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c860c3 elementor-widget elementor-widget-text-editor\" data-id=\"3c860c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>1.2 &#8211; ASSIGNAR CONTRASENYES ALS USUARIS SEGUINT LA NOSTRA POL\u00cdTICA DE CONTRASENYAS<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dafbcb9 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"dafbcb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>passwd nom_usuari<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80e31b7 elementor-widget elementor-widget-image\" data-id=\"80e31b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"688\" height=\"380\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_046-1.png\" class=\"attachment-large size-large wp-image-9208\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_046-1.png 688w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2025\/12\/Selection_046-1-300x166.png 300w\" sizes=\"(max-width: 688px) 100vw, 688px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b20d35d e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"b20d35d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9abfd6 elementor-widget elementor-widget-spacer\" data-id=\"d9abfd6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db412d8 elementor-widget elementor-widget-text-editor\" data-id=\"db412d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 2: INSTAL\u00b7LACI\u00d3 DE DOVECOT<\/strong><\/h3><p><strong>2.1 &#8211; REPOSITORIS I FONTS DEL PAQUET<\/strong><\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Concepte: Qu\u00e8 \u00e9s un repositori?<\/strong><\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Un <strong>repositori<\/strong> \u00e9s un servidor que cont\u00e9 paquets de programari compilats i preparats per instal\u00b7lar.\u00a0<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">A Rocky Linux, els repositoris oficials s\u00f3n:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><strong>BaseOS<\/strong>: Paquets base del sistema operatiu<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>AppStream<\/strong>: Aplicacions i eines addicionals<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Extras<\/strong>: Paquets complementaris<\/li><\/ul><p><strong>Comprovem quins repositoris tenim actius i busquem Dovecot als repositoris::<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78cb305 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"78cb305\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>dnf repolist\ndnf search dovecot<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e03c2db elementor-widget elementor-widget-image\" data-id=\"e03c2db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"661\" height=\"278\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_048.png\" class=\"attachment-large size-large wp-image-9210\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_048.png 661w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_048-300x126.png 300w\" sizes=\"(max-width: 661px) 100vw, 661px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3487052 elementor-widget elementor-widget-text-editor\" data-id=\"3487052\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Qu\u00e8 s\u00f3n aquests paquets?<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot<\/code>: Paquet principal (IMAP\/POP3)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot-pigeonhole<\/code>: Plugin per filtres de correu (Sieve)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot-mysql\/pgsql<\/code>: Per usuaris virtuals en base de dades.<\/li><\/ul><hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0b5ce0 elementor-widget elementor-widget-text-editor\" data-id=\"e0b5ce0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>2.2 &#8211; INSTAL\u00b7LACI\u00d3 DE DOVECOT<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4a98ca elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"f4a98ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>dnf install dovecot -y<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58fe425 elementor-widget elementor-widget-text-editor\" data-id=\"58fe425\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verifica que s&#8217;ha instal\u00b7lat correctament:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38f9492 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"38f9492\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Versi&oacute; de Dovecot\ndovecot --version\n\n# Estat del servei (encara no est&agrave; iniciat)\nsystemctl status dovecot\n\n# Fitxers instal&middot;lats\nrpm -ql dovecot | head -20<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-980507a elementor-widget elementor-widget-image\" data-id=\"980507a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"536\" height=\"623\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_049.png\" class=\"attachment-large size-large wp-image-9211\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_049.png 536w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_049-258x300.png 258w\" sizes=\"(max-width: 536px) 100vw, 536px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e805b42 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"e805b42\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e9f6b7f elementor-widget elementor-widget-spacer\" data-id=\"e9f6b7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed7ea3f elementor-widget elementor-widget-text-editor\" data-id=\"ed7ea3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 3: CONFIGURACI\u00d3 DE DOVECOT<\/strong><\/h3><p><strong>3.1 &#8211; C\u00d2PIA DE SEGURETAT (MOLT IMPORTANT!)<\/strong><\/p><p>\u00a0<\/p><h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Concepte: Per qu\u00e8 fer c\u00f2pies de seguretat?<\/strong><\/h5><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Abans de modificar <strong>QUALSEVOL<\/strong> fitxer de configuraci\u00f3, SEMPRE has de fer una c\u00f2pia de seguretat. Per qu\u00e8?<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\">Si fas un error, pots recuperar la configuraci\u00f3 original<\/li><li class=\"whitespace-normal break-words pl-2\">Pots comparar els canvis que has fet<\/li><li class=\"whitespace-normal break-words pl-2\">\u00c9s una pr\u00e0ctica professional obligat\u00f2ria.<\/li><\/ul><p><strong>Fem la c\u00f2pia de seguretat:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0280440 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0280440\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Copiar tot el directori de configuraci&oacute;\ncp -r \/etc\/dovecot \/etc\/dovecot.backup\n\n# Verificar que s&#039;ha copiat\nls -la \/etc\/ | grep dovecot<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16dca67 elementor-widget elementor-widget-image\" data-id=\"16dca67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"555\" height=\"149\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_050.png\" class=\"attachment-large size-large wp-image-9212\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_050.png 555w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_050-300x81.png 300w\" sizes=\"(max-width: 555px) 100vw, 555px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15fb8ce elementor-widget elementor-widget-text-editor\" data-id=\"15fb8ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Ara ja pots modificar fitxers amb tranquil\u00b7litat!<\/strong> Si fas malb\u00e9 alguna cosa, pots restaurar amb:<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a09534b elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"a09534b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>rm -rf \/etc\/dovecot\ncp -r \/etc\/dovecot.backup \/etc\/dovecot<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba1af9d elementor-widget elementor-widget-text-editor\" data-id=\"ba1af9d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Editem el fitxer de configuraci\u00f3:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ed151f elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1ed151f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vim \/etc\/dovecot\/conf.d\/10-mail.conf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f96300 elementor-widget elementor-widget-text-editor\" data-id=\"7f96300\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Busca la l\u00ednia <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">mail_location.\u00a0<\/code><\/p><p><strong>Aquesta l\u00ednia est\u00e0 comentada<\/strong> (t\u00e9 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">#<\/code> al davant), per tant no est\u00e0 activa.<\/p><p><strong>Modifica-la aix\u00ed:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ab9b5c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"6ab9b5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># ABANS\n#mail_location = mbox:~\/mail:INBOX=\/var\/mail\/%u\n# DESPR&Eacute;S\n# Ubicaci&oacute; dels correus: format Maildir al directori home de cada usuari\n# maildir: indica el format Maildir (un fitxer per correu)\n# ~\/Maildir: cada usuari tindr&agrave; una carpeta Maildir al seu home (\/home\/usuari\/Maildir)\n# Aquest format &eacute;s m&eacute;s segur, r&agrave;pid i fiable que mbox\nmail_location = maildir:~\/Maildir<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6bd091 elementor-widget elementor-widget-image\" data-id=\"d6bd091\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"580\" height=\"503\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_051.png\" class=\"attachment-large size-large wp-image-9213\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_051.png 580w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_051-300x260.png 300w\" sizes=\"(max-width: 580px) 100vw, 580px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d02636 elementor-widget elementor-widget-text-editor\" data-id=\"7d02636\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Explicaci\u00f3 l\u00ednia per l\u00ednia:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">maildir:<\/code> \u2192 Especifica que usem format Maildir<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">~\/Maildir<\/code> \u2192 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">~<\/code> significa el home de l&#8217;usuari (<code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">\/home\/aborrego\/Maildir<\/code>)<\/li><li class=\"whitespace-normal break-words pl-2\">Cada usuari tindr\u00e0 la seva pr\u00f2pia carpeta Maildir<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-93e357d elementor-widget elementor-widget-text-editor\" data-id=\"93e357d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3.3 &#8211; CREAR LES CARPETES MAILDIR PER ALS USUARIS<\/strong><\/p><p>\u00a0<\/p><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Cada usuari necessita tenir aquesta estructura creada:\u00a0<\/p><p>\u00a0<\/p><p>\/home\/usuari\/Maildir\/<br \/>\u251c\u2500\u2500 new\/ \u2190 Aqu\u00ed arriben els correus nous<br \/>\u251c\u2500\u2500 cur\/ \u2190 Correus llegits o marcats<br \/>\u2514\u2500\u2500 tmp\/ \u2190 Zona temporal durant la recepci\u00f3<\/p><p>\u00a0<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Per qu\u00e8 3 carpetes?<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">tmp\/<\/code>: Quan arriba un correu, primer es guarda aqu\u00ed (per evitar corrupci\u00f3)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">new\/<\/code>: Quan el correu est\u00e0 complet, es mou aqu\u00ed (correu nou, no llegit)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">cur\/<\/code>: Quan l&#8217;usuari llegeix el correu, es mou aqu\u00ed<\/li><\/ul><p><strong>Creem les carpetes per cada usuari:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e4e196 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"7e4e196\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Usuari: aborrego\nmkdir -p \/home\/aborrego\/Maildir\/{new,cur,tmp}\nchown -R aborrego:aborrego \/home\/aborrego\/Maildir\nchmod -R 700 \/home\/aborrego\/Maildir\n\n# Usuari: alozano\nmkdir -p \/home\/alozano\/Maildir\/{new,cur,tmp}\nchown -R alozano:alozano \/home\/alozano\/Maildir\nchmod -R 700 \/home\/alozano\/Maildir\n\n# Usuari: hbravo\nmkdir -p \/home\/hbravo\/Maildir\/{new,cur,tmp}\nchown -R hbravo:hbravo \/home\/hbravo\/Maildir\nchmod -R 700 \/home\/hbravo\/Maildir<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6ba292 elementor-widget elementor-widget-image\" data-id=\"e6ba292\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"454\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_053.png\" class=\"attachment-large size-large wp-image-9215\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_053.png 540w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_053-300x252.png 300w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ba74b8 elementor-widget elementor-widget-text-editor\" data-id=\"6ba74b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3.4 &#8211; CONFIGURACI\u00d3 DE PROTOCOLS (IMAP, POP3, LMTP)<\/strong><\/p><p><span class=\"token\">Concepte: Protocols de correu<\/span><\/p><p>\u00a0<\/p><p><strong><span class=\"token\">IMAP (Internet Message Access Protocol) &#8211; Port 143\/993<\/span><\/strong><\/p><p>Client \u2190\u2500\u2500\u2192 Servidor\u00a0<\/p><p>Com funciona: Els correus es queden al servidor<\/p><p><span class=\"token\">Avantatge: Sincronitzaci\u00f3 entre m\u00faltiples dispositius <\/span><span class=\"token\">(<\/span><span class=\"token\">m\u00f2bil, PC, web<\/span><span class=\"token\">)<\/span><\/p><p>Ideal per: Usuaris que accedeixen des de m\u00faltiples llocs<\/p><ul><li><span class=\"token\">Port <\/span><span class=\"token\">143<\/span><span class=\"token\">**: IMAP sense xifrar &#8211; <\/span><span class=\"token\">NO recomanat<\/span><\/li><li><span class=\"token\">Port <\/span><span class=\"token\">993<\/span><span class=\"token\">**: IMAPS <\/span><span class=\"token\">(<\/span><span class=\"token\">IMAP amb SSL\/TLS<\/span><span class=\"token\">)<\/span><span class=\"token\"> &#8211; RECOMANAT<\/span><\/li><\/ul><p><strong><span class=\"token\">POP3 (Post Office Protocol) &#8211; Port 110\/995**<\/span> Client \u2190\u2500\u2500 Servidor<\/strong><\/p><p>Com funciona: Descarrega els correus al client i els esborra del servidor.<\/p><p><span class=\"token\">Desavantatge: Els correus nom\u00e9s estan en <\/span><span class=\"token\">1<\/span><span class=\"token\"> dispositiu <\/span><\/p><p><span class=\"token\">Ideal per: Usuaris amb <\/span><span class=\"token\">1<\/span><span class=\"token\"> sol dispositiu i espai limitat al servidor <\/span><span class=\"token\">&#8211; <\/span><\/p><p><span class=\"token\">Port <\/span><span class=\"token\">110<\/span><span class=\"token\">**: POP3 sense xifrar <\/span><span class=\"token\">(<\/span><span class=\"token\">NO recomanat<\/span><span class=\"token\">)<\/span> <span class=\"token\">&#8211; Port <\/span><span class=\"token\">995<\/span><span class=\"token\">**: POP3S <\/span><span class=\"token\">(<\/span><span class=\"token\">POP3 amb SSL\/TLS<\/span><span class=\"token\">)<\/span><span class=\"token\"> &#8211; RECOMANAT<\/span><\/p><p>\u00a0<\/p><p><strong><span class=\"token\">LMTP (Local Mail Transfer Protocol)<\/span><\/strong><\/p><p>Postfix \u2500\u2500\u2192 Dovecot <span class=\"token\">(<\/span>SMTP<span class=\"token\">)<\/span> <span class=\"token\">(<\/span>LMTP<span class=\"token\">)<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3b7e943 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"3b7e943\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8b4109a elementor-widget elementor-widget-spacer\" data-id=\"8b4109a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eee0c1b elementor-widget elementor-widget-text-editor\" data-id=\"eee0c1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Editem el fitxer principal de Dovecot:<\/strong><\/p><p>Busca la l\u00ednia <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">protocols. <strong>Modifica-la aix\u00ed:<\/strong><\/code><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-719ca35 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"719ca35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># ABANS: \n#protocols = imap pop3 lmtp submission\n# DESPR&Eacute;S:\nprotocols = imap pop3 lmtp<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9bb0755 elementor-widget elementor-widget-image\" data-id=\"9bb0755\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"558\" height=\"293\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_054.png\" class=\"attachment-large size-large wp-image-9216\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_054.png 558w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_054-300x158.png 300w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3518282 elementor-widget elementor-widget-text-editor\" data-id=\"3518282\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Qu\u00e8 s\u00f3n aquests paquets?<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot<\/code>: Paquet principal (IMAP\/POP3)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot-pigeonhole<\/code>: Plugin per filtres de correu (Sieve)<\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">dovecot-mysql\/pgsql<\/code>: Per usuaris virtuals en base de dades.<\/li><\/ul><hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65306cb elementor-widget elementor-widget-text-editor\" data-id=\"65306cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3.5 &#8211; CONFIGURACI\u00d3 D&#8217;AUTENTICACI\u00d3<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5e250a elementor-widget elementor-widget-text-editor\" data-id=\"f5e250a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span class=\"token\">Concepte: Com s&#8217;autentiquen els usuaris?<\/span><\/strong><\/p><p>\u00a0<\/p><p>Quan un usuari intenta accedir al seu correu, Dovecot ha de verificar la seva identitat:\u00a0<\/p><p>\u00a0<\/p><p>Client: <span class=\"token\">&#8220;Soc aborrego, la meva contrasenya \u00e9s XYZ&#8221;<\/span> Dovecot: <span class=\"token\">&#8220;Deixa&#8217;m comprovar&#8230;&#8221;<\/span><\/p><p>Dovecot comprova \u2192 \/etc\/shadow<\/p><p>Dovecot: <span class=\"token\">&#8220;Correcte! Aqu\u00ed tens els teus correus&#8221;<\/span><\/p><p>\u00a0<\/p><p><strong>Mecanismes d&#8217;autenticaci\u00f3: Nosaltres usarem <span style=\"text-decoration: underline;\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">PLAIN<\/code> i <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">LOGIN<\/code> sobre SSL\/TLS<\/span> (segur i compatible).<\/strong><\/p><p>\u00a0<\/p><p><strong>Editem el fitxer d&#8217;autenticaci\u00f3:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1548c36 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1548c36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vi \/etc\/dovecot\/conf.d\/10-auth.conf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05a2d96 elementor-widget elementor-widget-text-editor\" data-id=\"05a2d96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Busca i modifica aquestes l\u00ednies:<\/strong><\/p><p><strong>1. Desactivar autenticaci\u00f3 en text pla sense SSL:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1da3509 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1da3509\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\ndisable_plaintext_auth = yes\n\n# MODIFICA A:\ndisable_plaintext_auth = yes\n\n# Desactivar autenticaci&oacute; en text pla sense SSL\/TLS\n# Aix&ograve; for&ccedil;a que els usuaris SEMPRE usin connexions xifrades (IMAPS\/POP3S)\n# Si intenten connectar sense SSL amb usuari\/contrasenya, es rebutjar&agrave;<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51f4620 elementor-widget elementor-widget-image\" data-id=\"51f4620\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"651\" height=\"133\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_055.png\" class=\"attachment-large size-large wp-image-9217\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_055.png 651w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_055-300x61.png 300w\" sizes=\"(max-width: 651px) 100vw, 651px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9388eb6 elementor-widget elementor-widget-text-editor\" data-id=\"9388eb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. Mecanismes d&#8217;autenticaci\u00f3:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b265b4 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0b265b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\nauth_mechanisms = plain\n\n# MODIFICA A:\nauth_mechanisms = plain login\n\n# Mecanismes d&#039;autenticaci&oacute; permesos:\n# - plain: usuari i contrasenya (sobre SSL &eacute;s segur)\n# - login: compatible amb m&eacute;s clients de correu (Outlook, etc.)<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6983097 elementor-widget elementor-widget-image\" data-id=\"6983097\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"607\" height=\"153\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_056.png\" class=\"attachment-large size-large wp-image-9218\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_056.png 607w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_056-300x76.png 300w\" sizes=\"(max-width: 607px) 100vw, 607px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e8906bf elementor-widget elementor-widget-text-editor\" data-id=\"e8906bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3. Habilitar autenticaci\u00f3 amb usuaris del sistema:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bccf66d elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"bccf66d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\n#!include auth-system.conf.ext\n\n# MODIFICA A:\n!include auth-system.conf.ext\n\n# Incloure configuraci&oacute; per autenticar amb usuaris del sistema Linux\n# Aix&ograve; permet que aborrego, alozano i hbravo s&#039;autentiquin amb les seves contrasenyes\n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b951b73 elementor-widget elementor-widget-image\" data-id=\"b951b73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"482\" height=\"124\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_057.png\" class=\"attachment-large size-large wp-image-9219\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_057.png 482w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_057-300x77.png 300w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc86cf6 elementor-widget elementor-widget-text-editor\" data-id=\"cc86cf6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4. Desactivar altres m\u00e8todes d&#8217;autenticaci\u00f3 (per ara):<\/strong><\/p><p><strong>ASSEGURA&#8217;T que aquestes l\u00ednies ESTAN comentades<\/strong> (amb <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">#<\/code>):<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48c9437 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"48c9437\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># No utilitzem autenticaci&oacute; SQL per ara (ho farem despr&eacute;s per usuaris virtuals)\n#!include auth-sql.conf.ext\n\n# No utilitzem LDAP\n#!include auth-ldap.conf.ext\n\n# No utilitzem base de dades est&agrave;tica\n#!include auth-static.conf.ext\n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7712947 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"7712947\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d43a697 elementor-widget elementor-widget-spacer\" data-id=\"d43a697\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-195bbfb elementor-widget elementor-widget-text-editor\" data-id=\"195bbfb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 4: CONFIGURACI\u00d3 SSL\/TLS<\/strong><\/h3><p><strong>4.1 &#8211; CONCEPTE: Qu\u00e8 \u00e9s SSL\/TLS i per qu\u00e8 \u00e9s important?<\/strong><\/p><p>\u00a0<\/p><h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>SSL\/TLS (Secure Sockets Layer \/ Transport Layer Security)<\/strong><\/h5><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Quan un client de correu (Outlook, Thunderbird, m\u00f2bil) es connecta al servidor:<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Sense SSL\/TLS:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0906f7f elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0906f7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>Client \u2500\u2500\u2500\u2500\u2500&rarr; [usuari: aborrego] [password: 1234] \u2500\u2500\u2500\u2500\u2500&rarr; Servidor\n         \ud83d\udce1 TEXT PLA visible per qualsevol! \ud83d\udce1<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-084895e elementor-widget elementor-widget-text-editor\" data-id=\"084895e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Qualsevol pot interceptar la comunicaci\u00f3<\/li><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Contrasenyes visibles<\/li><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Correus llegibles<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Amb SSL\/TLS:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5eae76f elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"5eae76f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>Client \u2500\u2500\u2500\u2500\u2500&rarr; [dades xifrades incomprensibles] \u2500\u2500\u2500\u2500\u2500&rarr; Servidor\n         \ud83d\udd12 XIFRAT amb criptografia \ud83d\udd12<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab1c5ee elementor-widget elementor-widget-text-editor\" data-id=\"ab1c5ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Comunicaci\u00f3 xifrada<\/li><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Contrasenyes protegides<\/li><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Correus privats<\/li><li class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Verificaci\u00f3 de la identitat del servidor<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Nosaltres NOM\u00c9S habilitarem els ports SSL<\/strong> (993, 995) per m\u00e0xima seguretat.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8133cdf elementor-widget elementor-widget-text-editor\" data-id=\"8133cdf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4.2 &#8211; VERIFICAR EL CERTIFICAT SSL<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0618d9c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0618d9c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Verificar que existeix\nls -la \/etc\/ssl\/certs\/postfix.pem\n\n# Veure informaci&oacute; del certificat\nopenssl x509 -in \/etc\/ssl\/certs\/postfix.pem -text -noout | head -20<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-849d2e9 elementor-widget elementor-widget-image\" data-id=\"849d2e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"488\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_058.png\" class=\"attachment-large size-large wp-image-9220\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_058.png 704w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_058-300x209.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49e7d77 elementor-widget elementor-widget-text-editor\" data-id=\"49e7d77\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4.3 &#8211; CONFIGURACI\u00d3 SSL A DOVECOT<\/strong><\/p><p>Editem el fitxer SSL:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3644693 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"3644693\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vi \/etc\/dovecot\/conf.d\/10-ssl.conf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5fb3f5b elementor-widget elementor-widget-text-editor\" data-id=\"5fb3f5b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Busca i modifica aquestes l\u00ednies:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1843a6d elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1843a6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\n#ssl = yes\n\n# MODIFICA A:\nssl = required\n\n# - yes: SSL opcional (permet connexions sense SSL)\n# - required: SSL OBLIGATORI (for&ccedil;a connexions xifrades)\n# Usem &quot;required&quot; per m&agrave;xima seguretat: TOTES les connexions han de ser SSL<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9d3b48 elementor-widget elementor-widget-text-editor\" data-id=\"c9d3b48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. Especificar el certificat SSL:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb43adc elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"cb43adc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\nssl_cert = &lt;\/etc\/pki\/dovecot\/certs\/dovecot.pem\nssl_key = &lt;\/etc\/pki\/dovecot\/private\/dovecot.pem\n\n# MODIFICA A:\nssl_cert = &lt;\/etc\/ssl\/certs\/postfix.pem\nssl_key = &lt;\/etc\/ssl\/certs\/postfix.pem\n\n# Ruta del certificat SSL (el mateix que usa Postfix)\n# El s&iacute;mbol &lt; indica que llegeix el contingut del fitxer\n# postfix.pem cont&eacute; TANT el certificat com la clau privada<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c7cd2f elementor-widget elementor-widget-image\" data-id=\"5c7cd2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"603\" height=\"228\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_059.png\" class=\"attachment-large size-large wp-image-9221\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_059.png 603w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_059-300x113.png 300w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d8195a elementor-widget elementor-widget-text-editor\" data-id=\"5d8195a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3. Versi\u00f3 m\u00ednima de TLS:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f26e3a5 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"f26e3a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\nssl_min_protocol = TLSv1.2\n\n# MODIFICA A:\nssl_min_protocol = TLSv1.2\n\n# Versi&oacute; m&iacute;nima de TLS acceptada\n# TLSv1.2 &eacute;s el m&iacute;nim recomanat (TLSv1.0 i TLSv1.1 s&oacute;n insegurs)\n# Aix&ograve; rebutja connexions amb protocols obsolets<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a270586 elementor-widget elementor-widget-text-editor\" data-id=\"a270586\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4. Configurar xifratges forts:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2158d38 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"2158d38\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># BUSCA:\n#ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL\n\n# MODIFICA A:\nssl_cipher_list = HIGH:!aNULL:!MD5:!RC4\n\n# Preferir els xifratges del servidor (millor control de seguretat)\nssl_prefer_server_ciphers = yes<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33e367d elementor-widget elementor-widget-image\" data-id=\"33e367d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"589\" height=\"268\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_060.png\" class=\"attachment-large size-large wp-image-9222\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_060.png 589w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_060-300x137.png 300w\" sizes=\"(max-width: 589px) 100vw, 589px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cb0ae1 elementor-widget elementor-widget-text-editor\" data-id=\"4cb0ae1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4.4 &#8211; VERIFICAR LA CONFIGURACI\u00d3 SSL<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe1a588 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"fe1a588\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>doveconf -n | grep ssl<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74b490d elementor-widget elementor-widget-image\" data-id=\"74b490d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"375\" height=\"163\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_061.png\" class=\"attachment-large size-large wp-image-9223\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_061.png 375w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_061-300x130.png 300w\" sizes=\"(max-width: 375px) 100vw, 375px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-541e0a8 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"541e0a8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c280210 elementor-widget elementor-widget-spacer\" data-id=\"c280210\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a2adc5 elementor-widget elementor-widget-text-editor\" data-id=\"2a2adc5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 5: INTEGRACI\u00d3 AMB POSTFIX (LMTP i SMTP AUTH)<\/strong><\/h3><p><strong>5.2 &#8211; CONFIGURACI\u00d3 DE LMTP A DOVECOT<\/strong><\/p><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Concepte: Qu\u00e8 \u00e9s LMTP?<\/strong><\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>LMTP (Local Mail Transfer Protocol)<\/strong> \u00e9s un protocol similar a SMTP per\u00f2 optimitzat per lliurament local.\u00a0<\/p><ol><li><strong>LMTP<\/strong>: Postfix entrega correus a Dovecot<\/li><li><strong>SMTP AUTH<\/strong>: Postfix usa Dovecot per autenticar usuaris que envien correus<\/li><\/ol><p><strong>Editem la configuraci\u00f3 de serveis:<\/strong><\/p><p><strong>Busca la secci\u00f3 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service lmtp.<\/code><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e9800aa elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"e9800aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vim \/etc\/dovecot\/conf.d\/10-master.conf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54fc705 elementor-widget elementor-widget-text-editor\" data-id=\"54fc705\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>MODIFICA TOTA la secci\u00f3 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service lmtp<\/code> aix\u00ed:<\/strong><\/h5><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>ELIMINA<\/strong> tot el contingut de <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service lmtp { ... }<\/code> i <strong>SUBSTITUEIX-LO<\/strong> per:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52038ed elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"52038ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>service lmtp {\n  # Socket Unix per comunicaci&oacute; amb Postfix\n  # Postfix enviar&agrave; correus a Dovecot a trav&eacute;s d&#039;aquest socket\n  # La ruta est&agrave; dins de \/var\/spool\/postfix perqu&egrave; Postfix treballa en un chroot\n  unix_listener \/var\/spool\/postfix\/private\/dovecot-lmtp {\n    mode = 0600          # Nom&eacute;s root i postfix poden accedir\n    user = postfix       # Propietari: usuari postfix\n    group = postfix      # Grup: postfix\n  }\n}\n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d100c18 elementor-widget elementor-widget-image\" data-id=\"d100c18\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"551\" height=\"172\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_062.png\" class=\"attachment-large size-large wp-image-9224\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_062.png 551w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_062-300x94.png 300w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32077f8 elementor-widget elementor-widget-text-editor\" data-id=\"32077f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>5.3 &#8211; CONFIGURACI\u00d3 D&#8217;AUTENTICACI\u00d3 SMTP (SMTP AUTH)<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65ab203 elementor-widget elementor-widget-text-editor\" data-id=\"65ab203\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"token\">Concepte: Per qu\u00e8 necessitem SMTP AUTH?<\/span><\/p><p>Quan un usuari vol enviar un correu des del seu client:\u00a0<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Sense SMTP AUTH:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\">\u274c Qualsevol podria enviar correus des del teu servidor<\/li><li class=\"whitespace-normal break-words pl-2\">\u274c El teu servidor es convertiria en un <strong>relay obert<\/strong> (spam!)<\/li><li class=\"whitespace-normal break-words pl-2\">\u274c Llistes negres bloquejarien el teu servidor<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Amb SMTP AUTH:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\">\u2705 Nom\u00e9s usuaris autenticats poden enviar<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 Protecci\u00f3 contra spam<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 Control d&#8217;acc\u00e9s<\/li><\/ul><p><strong>Edita el mateix fitxer i busca la secci\u00f3 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service auth<\/code>:<\/strong><\/p><hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fc3f5e elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"4fc3f5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vim \/etc\/dovecot\/conf.d\/10-master.conf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b8ea33 elementor-widget elementor-widget-text-editor\" data-id=\"6b8ea33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>MODIFICA afegint DINS de <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service auth<\/code> el nou socket<\/strong><\/p><p><strong>NO ELIMINIS<\/strong> el que hi ha, <strong>AFEGEIX<\/strong> el nou <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">unix_listener<\/code> dins de <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">service auth<\/code>:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6fa29f4 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"6fa29f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>service auth {\n  # Socket per autenticaci&oacute; d&#039;usuaris (consultes de base de dades interna)\n  unix_listener auth-userdb {\n    #mode = 0666\n    #user = \n    #group = \n  }\n\n  # Socket per a que Postfix pugui autenticar usuaris (SMTP AUTH)\n  # Quan un usuari vol enviar un correu via SMTP, Postfix pregunta a Dovecot\n  # si les credencials (usuari\/contrasenya) s&oacute;n correctes\n  # Dovecot comprova contra \/etc\/shadow i respon OK o ERROR\n  unix_listener \/var\/spool\/postfix\/private\/auth {\n    mode = 0660          # Lectura\/escriptura per propietari i grup\n    user = postfix       # Propietari: postfix\n    group = postfix      # Grup: postfix\n  }\n}<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a9b8026 elementor-widget elementor-widget-image\" data-id=\"a9b8026\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"666\" height=\"522\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_063.png\" class=\"attachment-large size-large wp-image-9229\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_063.png 666w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_063-300x235.png 300w\" sizes=\"(max-width: 666px) 100vw, 666px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06c5cde elementor-widget elementor-widget-text-editor\" data-id=\"06c5cde\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verifica que la configuraci\u00f3 de Dovecot \u00e9s correcta:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cd9ef4f elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"cd9ef4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>doveconf -n | grep -A 5 &quot;service lmtp&quot;\ndoveconf -n | grep -A 10 &quot;service auth&quot;<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6b7353 elementor-widget elementor-widget-image\" data-id=\"b6b7353\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"558\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_064.png\" class=\"attachment-large size-large wp-image-9230\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_064.png 719w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_064-300x239.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c9b9fa elementor-widget elementor-widget-text-editor\" data-id=\"7c9b9fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>5.4 &#8211; CONFIGURACI\u00d3 DE POSTFIX PER USAR DOVECOT<\/strong><\/p><p><strong>Editem la configuraci\u00f3 principal de Postfix:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ba3270 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0ba3270\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>vi \/etc\/postfix\/main.cf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06f0987 elementor-widget elementor-widget-text-editor\" data-id=\"06f0987\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>VES AL FINAL del fitxer i AFEGEIX aquestes l\u00ednies:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cac666 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"4cac666\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># ============================================\n# INTEGRACI&Oacute; AMB DOVECOT\n# ============================================\n\n# --- LLIURAMENT DE CORREUS VIA DOVECOT LMTP ---\n# En lloc de guardar correus directament a \/var\/mail (format mbox),\n# Postfix envia els correus entrants a Dovecot via LMTP\n# Dovecot els guarda a ~\/Maildir\/ de cada usuari (format Maildir)\n# Aix&ograve; permet sincronitzaci&oacute; IMAP, millor rendiment i m&eacute;s fiabilitat\nmailbox_transport = lmtp:unix:private\/dovecot-lmtp\n\n# --- AUTENTICACI&Oacute; SMTP VIA DOVECOT (SMTP AUTH) ---\n# Quan un usuari vol enviar un correu (port 587), Postfix usa\n# Dovecot per verificar les seves credencials (usuari\/contrasenya)\n\n# Tipus d&#039;autenticaci&oacute; SASL: Dovecot\n# SASL = Simple Authentication and Security Layer\nsmtpd_sasl_type = dovecot\n\n# Ruta del socket d&#039;autenticaci&oacute; de Dovecot\n# Postfix escriur&agrave; aqu&iacute; per preguntar si les credencials s&oacute;n correctes\nsmtpd_sasl_path = private\/auth\n\n# Habilitar autenticaci&oacute; SMTP (permet que usuaris s&#039;autentiquin)\nsmtpd_sasl_auth_enable = yes\n\n# Opcions de seguretat SASL:\n# - noanonymous: No permetre autenticaci&oacute; sense credencials\n#   (obliga a proporcionar usuari i contrasenya)\nsmtpd_sasl_security_options = noanonymous\n\n# Domini local per SASL (per defecte: serv-correu.illa4.local)\n# Els usuaris poden autenticar-se com &quot;aborrego&quot; o &quot;aborrego@illa4.local&quot;\nsmtpd_sasl_local_domain = $myhostname\n\n# Compatibilitat amb clients Outlook antics i altres clients amb bugs\n# Alguns clients tenen implementacions SASL trencades, aix&ograve; els permet connectar\nbroken_sasl_auth_clients = yes<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13c625a elementor-widget elementor-widget-image\" data-id=\"13c625a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"688\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_065.png\" class=\"attachment-large size-large wp-image-9231\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_065.png 715w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_065-300x295.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-909db11 elementor-widget elementor-widget-text-editor\" data-id=\"909db11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Explicaci\u00f3 l\u00ednia per l\u00ednia:<\/strong><\/h5><p><strong>1. <\/strong><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\"><span style=\"text-decoration: underline;\">mailbox_transport = lmtp:unix:private\/dovecot-lmtp<\/span><\/code>: Indica a Postfix que quan rebi un correu <strong>local<\/strong> (per <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">aborrego@illa4.local<\/code>), en lloc de guardar-lo directament a <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">\/var\/mail\/aborrego<\/code>, ha de passar-lo a Dovecot via LMTP<\/p><p><strong>2. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">smtpd_sasl_type = dovecot<\/code><\/strong>: Indica que usarem Dovecot com a backend d&#8217;autenticaci\u00f3 SASL<\/p><p><strong>3. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">smtpd_sasl_path = private\/auth<\/code><\/strong>: Especifica el socket Unix on Dovecot escolta peticions d&#8217;autenticaci\u00f3<\/p><p><strong>4. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">smtpd_sasl_auth_enable = yes<\/code><\/strong>: Activa l&#8217;autenticaci\u00f3 SMTP (SMTP AUTH) i permet que els clients proporcionin usuari\/contrasenya per enviar correus<\/p><p><strong>5. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">smtpd_sasl_security_options = noanonymous<\/code><\/strong>: \u00a0Prohibeix autenticaci\u00f3 sense credencials i obliga a proporcionar usuari i contrasenya<\/p><p><strong>6. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">smtpd_sasl_local_domain = $myhostname<\/code><\/strong>: defineix el domini per defecte per autenticaci\u00f3 i<code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">$myhostname<\/code> s&#8217;expandeix a <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">serv-correu.illa4.local.<\/code><\/p><p><strong>7. <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">broken_sasl_auth_clients = yes:<\/code><\/strong>Postfix ofereix m\u00e8todes d&#8217;autenticaci\u00f3 addicionals per compatibilitat i no afecta la seguretat (encara requereix SSL\/TLS)<\/p><p><strong><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\"><\/code><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0523077 elementor-widget elementor-widget-text-editor\" data-id=\"0523077\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>5.5 &#8211; VERIFICAR CONFIGURACI\u00d3 DE POSTFIX<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6371b35 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"6371b35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>postconf -n | grep -E &quot;mailbox_transport|sasl&quot;<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3748385 elementor-widget elementor-widget-image\" data-id=\"3748385\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"665\" height=\"293\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_066.png\" class=\"attachment-large size-large wp-image-9232\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_066.png 665w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_066-300x132.png 300w\" sizes=\"(max-width: 665px) 100vw, 665px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b352987 elementor-widget elementor-widget-text-editor\" data-id=\"b352987\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>5.6 &#8211; VERIFICAR CONFIGURACI\u00d3 COMPLETA DE DOVECOT<\/strong><\/p><p>Aix\u00f2 mostra TOTA la configuraci\u00f3 activa (sense comentaris). Revisa que apareguin:<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">\u00a0<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">protocols = imap pop3 lmtp<\/code><\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">mail_location = maildir:~\/Maildir<\/code><\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">ssl = required<\/code><\/li><li class=\"whitespace-normal break-words pl-2\"><code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">ssl_cert<\/code> i <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">ssl_key<\/code> apuntant a <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">\/etc\/ssl\/certs\/postfix.pem<\/code><\/li><li class=\"whitespace-normal break-words pl-2\">Socket LMTP a <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">\/var\/spool\/postfix\/private\/dovecot-lmtp<\/code><\/li><li class=\"whitespace-normal break-words pl-2\">Socket AUTH a <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">\/var\/spool\/postfix\/private\/auth<\/code><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66cb26c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"66cb26c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>doveconf -n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4055fd5 elementor-widget elementor-widget-image\" data-id=\"4055fd5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"887\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_067.png\" class=\"attachment-large size-large wp-image-9233\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_067.png 678w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_067-229x300.png 229w\" sizes=\"(max-width: 678px) 100vw, 678px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-aec765d e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"aec765d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47c49f6 elementor-widget elementor-widget-text-editor\" data-id=\"47c49f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 6: ARRENCAR ELS SERVEIS I FER PROVES<\/strong><\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Ara que tot est\u00e0 configurat, arrencarem Dovecot i Postfix i farem proves de:<\/p><ol class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1.5 [li_&amp;]:gap-1.5 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-decimal flex flex-col gap-2 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\">Connexi\u00f3 IMAP\/POP3<\/li><li class=\"whitespace-normal break-words pl-2\">Enviament de correu local<\/li><li class=\"whitespace-normal break-words pl-2\">Recepci\u00f3 de correu<\/li><li class=\"whitespace-normal break-words pl-2\">Autenticaci\u00f3<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-159c372 elementor-widget elementor-widget-text-editor\" data-id=\"159c372\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>6.1 &#8211; ARRENCAR DOVECOT<\/strong><\/p><p>\u00a0<\/p><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Concepte: Ordre d&#8217;arrencada<\/strong><\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">\u00c9s important arrencar els serveis en l&#8217;ordre correcte:<\/p><ol class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-decimal flex flex-col gap-1 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><strong>Primer Dovecot<\/strong> (crea els sockets que Postfix necessita)<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Despr\u00e9s Postfix<\/strong> (es connecta als sockets de Dovecot)<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7861e2e elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"7861e2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Primer Dovecot (crea els sockets)\nsudo systemctl enable --now dovecot\n\n# Despr&eacute;s Postfix\nsudo systemctl enable --now postfix\n\n# Comprova estat\nsudo systemctl status dovecot\nsudo systemctl status postfix<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d37591 elementor-widget elementor-widget-image\" data-id=\"5d37591\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"665\" height=\"739\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_068.png\" class=\"attachment-large size-large wp-image-9238\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_068.png 665w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_068-270x300.png 270w\" sizes=\"(max-width: 665px) 100vw, 665px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60143c5 elementor-widget elementor-widget-text-editor\" data-id=\"60143c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verifica els ports oberts:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59ef979 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"59ef979\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>ss -tuln | grep -E &#039;:(143|993|110|995)&#039;<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea53460 elementor-widget elementor-widget-text-editor\" data-id=\"ea53460\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>6.2 &#8211; Comprovar sockets<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37f8b23 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"37f8b23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>sudo ls -lZ \/var\/spool\/postfix\/private\/ | grep -E &#039;dovecot-lmtp|auth&#039;<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-003888d elementor-widget elementor-widget-image\" data-id=\"003888d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"671\" height=\"125\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_069.png\" class=\"attachment-large size-large wp-image-9239\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_069.png 671w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_069-300x56.png 300w\" sizes=\"(max-width: 671px) 100vw, 671px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6da25f3 elementor-widget elementor-widget-text-editor\" data-id=\"6da25f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verificar que Postfix pot accedir als sockets de Dovecot:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-581ccb6 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"581ccb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>postconf -d | grep virtual_transport\npostconf mailbox_transport\n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc33ab4 elementor-widget elementor-widget-image\" data-id=\"cc33ab4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"592\" height=\"256\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_073.png\" class=\"attachment-large size-large wp-image-9253\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_073.png 592w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_073-300x130.png 300w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e33fc3 elementor-widget elementor-widget-text-editor\" data-id=\"7e33fc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>6.4 &#8211; CONFIGURAR FIREWALL<\/strong><\/p><p>\u00a0<\/p><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Concepte: Per qu\u00e8 obrir ports al firewall?<\/strong><\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Rocky Linux t\u00e9 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">firewalld<\/code> actiu per defecte. Aquest firewall <strong>bloqueja tots els ports<\/strong> que no estiguin expl\u00edcitament permesos.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Necessitem obrir els ports de:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><strong>IMAPS (993)<\/strong>: Per que els clients puguin llegir correus<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>POP3S (995)<\/strong>: Per compatibilitat amb clients POP3<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>SMTP Submission (587)<\/strong>: Per que els clients puguin enviar correus autenticats (aquest ja hauria d&#8217;estar obert si tens Postfix configurat)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74b04bb elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"74b04bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>firewall-cmd --state<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9dc7d2 elementor-widget elementor-widget-text-editor\" data-id=\"d9dc7d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Veure els serveis permesos actualment i busca si ja tens <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">imap<\/code>, <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">imaps<\/code>, <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">pop3<\/code>, <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">pop3s<\/code> a la llista de serveis.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cc0097 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"4cc0097\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>firewall-cmd --list-all<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c1f2c7 elementor-widget elementor-widget-image\" data-id=\"9c1f2c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"405\" height=\"303\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_074.png\" class=\"attachment-large size-large wp-image-9254\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_074.png 405w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_074-300x224.png 300w\" sizes=\"(max-width: 405px) 100vw, 405px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05856ce elementor-widget elementor-widget-text-editor\" data-id=\"05856ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Obre els ports necessaris:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f947126 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"f947126\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Obrir IMAP amb SSL (port 993)\nfirewall-cmd --permanent --add-service=imaps\n\n# Obrir POP3 amb SSL (port 995)\nfirewall-cmd --permanent --add-service=pop3s\n\n# Si vols tamb&eacute; els ports sense SSL (NO recomanat, per&ograve; per proves):\n# firewall-cmd --permanent --add-service=imap\n# firewall-cmd --permanent --add-service=pop3\n\n# Recarregar el firewall per aplicar els canvis\nfirewall-cmd --reload<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b71be89 elementor-widget elementor-widget-image\" data-id=\"b71be89\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"604\" height=\"159\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_075.png\" class=\"attachment-large size-large wp-image-9255\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_075.png 604w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_075-300x79.png 300w\" sizes=\"(max-width: 604px) 100vw, 604px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e387886 elementor-widget elementor-widget-text-editor\" data-id=\"e387886\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verifica que s&#8217;han obert. Hauries de veure <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">imaps<\/code> i <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">pop3s<\/code> a la llista.\u00a0<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f9037c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"2f9037c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>firewall-cmd --list-all\nss -tuln | grep -E &#039;:(143|993|110|995)<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da0af2f elementor-widget elementor-widget-image\" data-id=\"da0af2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"482\" height=\"119\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_077.png\" class=\"attachment-large size-large wp-image-9258\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_077.png 482w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_077-300x74.png 300w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4648b40 elementor-widget elementor-widget-image\" data-id=\"4648b40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"439\" height=\"299\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_076.png\" class=\"attachment-large size-large wp-image-9257\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_076.png 439w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_076-300x204.png 300w\" sizes=\"(max-width: 439px) 100vw, 439px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cf9b304 elementor-widget elementor-widget-text-editor\" data-id=\"cf9b304\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>6.6 &#8211; PROVA DE CONNEXI\u00d3 B\u00c0SICA (TELNET)<\/strong><\/p><p>\u00a0<\/p><h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Provar connexi\u00f3 amb telnet<\/strong><\/h4><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Abans de configurar un client de correu complet, podem fer una prova b\u00e0sica amb <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">telnet<\/code>:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-70807e1 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"70807e1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b01d58d e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-child\" data-id=\"b01d58d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dfe56c1 elementor-widget elementor-widget-text-editor\" data-id=\"dfe56c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Prova 1: Connexi\u00f3 IMAP (port 143 &#8211; hauria de fallar si ssl=required):<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e81eb1b elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"e81eb1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>telnet localhost 143<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4567d97 elementor-widget elementor-widget-image\" data-id=\"4567d97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"518\" height=\"140\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_078.png\" class=\"attachment-large size-large wp-image-9259\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_078.png 518w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_078-300x81.png 300w\" sizes=\"(max-width: 518px) 100vw, 518px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d436ea4 elementor-widget elementor-widget-text-editor\" data-id=\"d436ea4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Aix\u00f2 \u00e9s correte perqu\u00e8 hem for\u00e7at SSL.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-58e5321 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-child\" data-id=\"58e5321\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cf1a823 elementor-widget elementor-widget-text-editor\" data-id=\"cf1a823\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Prova 2: Connexi\u00f3 IMAPS amb OpenSSL:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15c952b elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"15c952b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>openssl s_client -connect localhost:993 -crlf<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d23b747 elementor-widget elementor-widget-image\" data-id=\"d23b747\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"635\" height=\"471\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_079.png\" class=\"attachment-large size-large wp-image-9260\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_079.png 635w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_079-300x223.png 300w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4bc6ec5 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-child\" data-id=\"4bc6ec5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c675a24 elementor-widget elementor-widget-text-editor\" data-id=\"c675a24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Prova 3: Autenticaci\u00f3 IMAP:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-662d429 elementor-widget elementor-widget-text-editor\" data-id=\"662d429\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Dins de la connexi\u00f3 OpenSSL anterior, pots provar autenticar-te. Si veus <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">OK Logged in<\/code>, l&#8217;autenticaci\u00f3 funciona.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62f1123 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"62f1123\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'># Connectar\nopenssl s_client -connect localhost:993 -crlf\n\n# Dins de la connexi&oacute;, escriu:\na1 LOGIN aborrego la_contrasenya_que_vas_posar<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-adcd6e7 elementor-widget elementor-widget-image\" data-id=\"adcd6e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"595\" height=\"232\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_080.png\" class=\"attachment-large size-large wp-image-9261\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_080.png 595w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_080-300x117.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-45c710b e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-child\" data-id=\"45c710b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0790786 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"0790786\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4122410 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"4122410\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'><\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b4e941 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no e-con e-parent\" data-id=\"9b4e941\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1d16892 elementor-widget elementor-widget-text-editor\" data-id=\"1d16892\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>PART 7: PROVES COMPLETES DEL SISTEMA<\/strong><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b8d7c3e elementor-widget elementor-widget-text-editor\" data-id=\"b8d7c3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>7.1 &#8211; PROVA D&#8217;ENVIAMENT DE CORREU LOCAL<\/strong><\/p><p class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"><strong>Instal\u00b7lar l&#8217;eina <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">mailx<\/code> (si no la tens) o Instal\u00b7lar s-nail:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2747d47 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"2747d47\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>dnf install s-nail -y<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-189730b elementor-widget elementor-widget-text-editor\" data-id=\"189730b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Enviar amb el teu usuari creat, en el meu cas com a aborrego.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-370fdad elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"370fdad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>su - aborrego\necho &quot;Ara hauria de funcionar perfectament!&quot; | mail -s &quot;Test definitiu&quot; hbravo@illa4.local\nexit<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c9837d elementor-widget elementor-widget-text-editor\" data-id=\"2c9837d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verificar com a root:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-724c79e elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"724c79e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>tail -30 \/var\/log\/maillog<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a6034c elementor-widget elementor-widget-image\" data-id=\"1a6034c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"68\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_082-1024x100.png\" class=\"attachment-large size-large wp-image-9262\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_082-1024x100.png 1024w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_082-300x29.png 300w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_082-768x75.png 768w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_082.png 1246w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9476b3b elementor-widget elementor-widget-text-editor\" data-id=\"9476b3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Verificar que el coreu ha arribat:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-620a6fb elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"620a6fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>ls -la \/home\/hbravo\/Maildir\/new\/<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-adfc899 elementor-widget elementor-widget-image\" data-id=\"adfc899\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"107\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_083.png\" class=\"attachment-large size-large wp-image-9263\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_083.png 809w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_083-300x46.png 300w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_083-768x118.png 768w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bac50a elementor-widget elementor-widget-text-editor\" data-id=\"7bac50a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>LLEGEIX EL CORREU:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51f86cb elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"51f86cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>cat \/home\/hbravo\/Maildir\/new\/*<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab0b113 elementor-widget elementor-widget-image\" data-id=\"ab0b113\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"594\" height=\"323\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_084.png\" class=\"attachment-large size-large wp-image-9264\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_084.png 594w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_084-300x163.png 300w\" sizes=\"(max-width: 594px) 100vw, 594px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-449bab1 elementor-widget elementor-widget-text-editor\" data-id=\"449bab1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>PROVA AMB TOTS ELS USUARIS i VERIFICA QUE TOTS HAN REBUT CORREUS:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-934e56d elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"934e56d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>ls \/home\/aborrego\/Maildir\/new\/\nls \/home\/alozano\/Maildir\/new\/\nls \/home\/hbravo\/Maildir\/new\/<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb0475e elementor-widget elementor-widget-image\" data-id=\"eb0475e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"313\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_085.png\" class=\"attachment-large size-large wp-image-9269\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_085.png 764w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_085-300x134.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e21a232 elementor-widget elementor-widget-image\" data-id=\"e21a232\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"173\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_086.png\" class=\"attachment-large size-large wp-image-9270\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_086.png 861w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_086-300x74.png 300w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_086-768x190.png 768w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea52f67 elementor-widget elementor-widget-text-editor\" data-id=\"ea52f67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>PROVA LLEGIR UN CORREU VIA IMAP:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1dddf3e elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1dddf3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>openssl s_client -connect localhost:993 -crlf -quiet<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ade648f elementor-widget elementor-widget-text-editor\" data-id=\"ade648f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>**Dins de la connexi\u00f3 IMAP, escriu:**<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-888bd70 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"888bd70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-javascript'>a1 LOGIN hbravo contrasenya_de_hbravo\na2 SELECT INBOX\na3 FETCH 1:* (FLAGS BODY[HEADER.FIELDS (FROM TO SUBJECT DATE)])\na4 LOGOUT\n<\/code><\/pre>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dff7b7e elementor-widget elementor-widget-image\" data-id=\"dff7b7e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"331\" src=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_087-1024x484.png\" class=\"attachment-large size-large wp-image-9275\" alt=\"\" srcset=\"https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_087-1024x484.png 1024w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_087-300x142.png 300w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_087-768x363.png 768w, https:\/\/aborrego.inscastellbisbal.net\/wp-content\/uploads\/2026\/01\/Selection_087.png 1277w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dca06ca elementor-widget elementor-widget-text-editor\" data-id=\"dca06ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"><strong>EL MEU SERVIDOR DE CORREU:<\/strong><\/h4><ol class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-decimal flex flex-col gap-1 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Instal\u00b7lar i configurar Dovecot<\/strong> des de zero<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Crear usuaris del sistema<\/strong> amb contrasenyes<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Configurar Maildir<\/strong> per emmagatzematge eficient<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Integrar Postfix amb Dovecot<\/strong> via LMTP i SMTP AUTH<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Configurar SSL\/TLS<\/strong> per connexions segures<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Configurar autenticaci\u00f3<\/strong> per eliminar dominis<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Obrir ports al firewall<\/strong> correctament<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Enviar i rebre correus<\/strong> entre m\u00faltiples usuaris<\/li><li class=\"whitespace-normal break-words pl-2\">\u2705 <strong>Verificar que tot funciona<\/strong> amb logs i proves reals<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>CONFIGURACI\u00d3 DOVECOT &#8211; SERVIDOR DE CORREU ENTRANT Tornar al repte 2.2 PART 1: CREACI\u00d3 D&#8217;USUARIS DEL SISTEMA 1.1 &#8211; CREAR ELS USUARIS useradd [opcions] nom_usuari Verifica que els directoris home s&#8217;han creat: ls -la \/home\/ 1.2 &#8211; ASSIGNAR CONTRASENYES ALS USUARIS SEGUINT LA NOSTRA POL\u00cdTICA DE CONTRASENYAS passwd nom_usuari PART 2: INSTAL\u00b7LACI\u00d3 DE DOVECOT 2.1 &#8211; REPOSITORIS I FONTS DEL PAQUET Concepte: Qu\u00e8 \u00e9s un repositori? Un repositori \u00e9s un servidor que cont\u00e9 paquets de programari compilats i preparats per instal\u00b7lar.\u00a0 A Rocky Linux, els repositoris oficials s\u00f3n: BaseOS: Paquets base del sistema operatiu AppStream: Aplicacions i eines addicionals Extras: Paquets complementaris Comprovem quins repositoris tenim actius i busquem Dovecot als repositoris:: dnf repolist dnf search dovecot Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 2.2 &#8211; INSTAL\u00b7LACI\u00d3 DE DOVECOT dnf install dovecot -y Verifica que s&#8217;ha instal\u00b7lat correctament: # Versi&oacute; de Dovecot dovecot &#8211;version # Estat del servei (encara no est&agrave; iniciat) systemctl status dovecot # Fitxers instal&middot;lats rpm -ql dovecot | head -20 PART 3: CONFIGURACI\u00d3 DE DOVECOT 3.1 &#8211; C\u00d2PIA DE SEGURETAT (MOLT IMPORTANT!) \u00a0 Concepte: Per qu\u00e8 fer c\u00f2pies de seguretat? Abans de modificar QUALSEVOL fitxer de configuraci\u00f3, SEMPRE has de fer una c\u00f2pia de seguretat. Per qu\u00e8? Si fas un error, pots recuperar la configuraci\u00f3 original Pots comparar els canvis que has fet \u00c9s una pr\u00e0ctica professional obligat\u00f2ria. Fem la c\u00f2pia de seguretat: # Copiar tot el directori de configuraci&oacute; cp -r \/etc\/dovecot \/etc\/dovecot.backup # Verificar que s&#039;ha copiat ls -la \/etc\/ | grep dovecot Ara ja pots modificar fitxers amb tranquil\u00b7litat! Si fas malb\u00e9 alguna cosa, pots restaurar amb: \u00a0 rm -rf \/etc\/dovecot cp -r \/etc\/dovecot.backup \/etc\/dovecot Editem el fitxer de configuraci\u00f3: vim \/etc\/dovecot\/conf.d\/10-mail.conf Busca la l\u00ednia mail_location.\u00a0 Aquesta l\u00ednia est\u00e0 comentada (t\u00e9 # al davant), per tant no est\u00e0 activa. Modifica-la aix\u00ed: # ABANS #mail_location = mbox:~\/mail:INBOX=\/var\/mail\/%u # DESPR&Eacute;S # Ubicaci&oacute; dels correus: format Maildir al directori home de cada usuari # maildir: indica el format Maildir (un fitxer per correu) # ~\/Maildir: cada usuari tindr&agrave; una carpeta Maildir al seu home (\/home\/usuari\/Maildir) # Aquest format &eacute;s m&eacute;s segur, r&agrave;pid i fiable que mbox mail_location = maildir:~\/Maildir Explicaci\u00f3 l\u00ednia per l\u00ednia: maildir: \u2192 Especifica que usem format Maildir ~\/Maildir \u2192 ~ significa el home de l&#8217;usuari (\/home\/aborrego\/Maildir) Cada usuari tindr\u00e0 la seva pr\u00f2pia carpeta Maildir 3.3 &#8211; CREAR LES CARPETES MAILDIR PER ALS USUARIS \u00a0 Cada usuari necessita tenir aquesta estructura creada:\u00a0 \u00a0 \/home\/usuari\/Maildir\/\u251c\u2500\u2500 new\/ \u2190 Aqu\u00ed arriben els correus nous\u251c\u2500\u2500 cur\/ \u2190 Correus llegits o marcats\u2514\u2500\u2500 tmp\/ \u2190 Zona temporal durant la recepci\u00f3 \u00a0 Per qu\u00e8 3 carpetes? tmp\/: Quan arriba un correu, primer es guarda aqu\u00ed (per evitar corrupci\u00f3) new\/: Quan el correu est\u00e0 complet, es mou aqu\u00ed (correu nou, no llegit) cur\/: Quan l&#8217;usuari llegeix el correu, es mou aqu\u00ed Creem les carpetes per cada usuari: # Usuari: aborrego mkdir -p \/home\/aborrego\/Maildir\/{new,cur,tmp} chown -R aborrego:aborrego \/home\/aborrego\/Maildir chmod -R 700 \/home\/aborrego\/Maildir # Usuari: alozano mkdir -p \/home\/alozano\/Maildir\/{new,cur,tmp} chown -R alozano:alozano \/home\/alozano\/Maildir chmod -R 700 \/home\/alozano\/Maildir # Usuari: hbravo mkdir -p \/home\/hbravo\/Maildir\/{new,cur,tmp} chown -R hbravo:hbravo \/home\/hbravo\/Maildir chmod -R 700 \/home\/hbravo\/Maildir 3.4 &#8211; CONFIGURACI\u00d3 DE PROTOCOLS (IMAP, POP3, LMTP) Concepte: Protocols de correu \u00a0 IMAP (Internet Message Access Protocol) &#8211; Port 143\/993 Client \u2190\u2500\u2500\u2192 Servidor\u00a0 Com funciona: Els correus es queden al servidor Avantatge: Sincronitzaci\u00f3 entre m\u00faltiples dispositius (m\u00f2bil, PC, web) Ideal per: Usuaris que accedeixen des de m\u00faltiples llocs Port 143**: IMAP sense xifrar &#8211; NO recomanat Port 993**: IMAPS (IMAP amb SSL\/TLS) &#8211; RECOMANAT POP3 (Post Office Protocol) &#8211; Port 110\/995** Client \u2190\u2500\u2500 Servidor Com funciona: Descarrega els correus al client i els esborra del servidor. Desavantatge: Els correus nom\u00e9s estan en 1 dispositiu Ideal per: Usuaris amb 1 sol dispositiu i espai limitat al servidor &#8211; Port 110**: POP3 sense xifrar (NO recomanat) &#8211; Port 995**: POP3S (POP3 amb SSL\/TLS) &#8211; RECOMANAT \u00a0 LMTP (Local Mail Transfer Protocol) Postfix \u2500\u2500\u2192 Dovecot (SMTP) (LMTP) Editem el fitxer principal de Dovecot: Busca la l\u00ednia protocols. Modifica-la aix\u00ed: # ABANS: #protocols = imap pop3 lmtp submission # DESPR&Eacute;S: protocols = imap pop3 lmtp Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 3.5 &#8211; CONFIGURACI\u00d3 D&#8217;AUTENTICACI\u00d3 Concepte: Com s&#8217;autentiquen els usuaris? \u00a0 Quan un usuari intenta accedir al seu correu, Dovecot ha de verificar la seva identitat:\u00a0 \u00a0 Client: &#8220;Soc aborrego, la meva contrasenya \u00e9s XYZ&#8221; Dovecot: &#8220;Deixa&#8217;m comprovar&#8230;&#8221; Dovecot comprova \u2192 \/etc\/shadow Dovecot: &#8220;Correcte! Aqu\u00ed tens els teus correus&#8221; \u00a0 Mecanismes d&#8217;autenticaci\u00f3: Nosaltres usarem PLAIN i LOGIN sobre SSL\/TLS (segur i compatible). \u00a0 Editem el fitxer d&#8217;autenticaci\u00f3: vi \/etc\/dovecot\/conf.d\/10-auth.conf Busca i modifica aquestes l\u00ednies: 1. Desactivar autenticaci\u00f3 en text pla sense SSL: # BUSCA: disable_plaintext_auth = yes # MODIFICA A: disable_plaintext_auth = yes # Desactivar autenticaci&oacute; en text pla sense SSL\/TLS # Aix&ograve; for&ccedil;a que els usuaris SEMPRE usin connexions xifrades (IMAPS\/POP3S) # Si intenten connectar sense SSL amb usuari\/contrasenya, es rebutjar&agrave; 2. Mecanismes d&#8217;autenticaci\u00f3: # BUSCA: auth_mechanisms = plain # MODIFICA A: auth_mechanisms = plain login # Mecanismes d&#039;autenticaci&oacute; permesos: # &#8211; plain: usuari i contrasenya (sobre SSL &eacute;s segur) # &#8211; login: compatible amb m&eacute;s clients de correu (Outlook, etc.) 3. Habilitar autenticaci\u00f3 amb usuaris del sistema: # BUSCA: #!include auth-system.conf.ext # MODIFICA A: !include auth-system.conf.ext # Incloure configuraci&oacute; per autenticar amb usuaris del sistema Linux # Aix&ograve; permet que aborrego, alozano i hbravo s&#039;autentiquin amb les seves contrasenyes 4. Desactivar altres m\u00e8todes d&#8217;autenticaci\u00f3 (per ara): ASSEGURA&#8217;T que aquestes l\u00ednies ESTAN comentades (amb #): # No utilitzem autenticaci&oacute; SQL per ara (ho farem despr&eacute;s per usuaris virtuals) #!include auth-sql.conf.ext # No utilitzem LDAP #!include auth-ldap.conf.ext # No utilitzem base de dades est&agrave;tica #!include auth-static.conf.ext PART 4: CONFIGURACI\u00d3 SSL\/TLS 4.1 &#8211; CONCEPTE: Qu\u00e8 \u00e9s SSL\/TLS i per qu\u00e8 \u00e9s important? \u00a0 SSL\/TLS (Secure Sockets Layer \/ Transport Layer Security) Quan un client de correu (Outlook, Thunderbird, m\u00f2bil) es connecta al servidor: Sense SSL\/TLS: Client \u2500\u2500\u2500\u2500\u2500&rarr; [usuari: aborrego] [password: 1234] \u2500\u2500\u2500\u2500\u2500&rarr; Servidor &#8230; <a title=\"CONFIGURACI\u00d3 DOVECOT &#8211; SERVIDOR DE CORREU ENTRANT\" class=\"read-more\" href=\"https:\/\/aborrego.inscastellbisbal.net\/en\/2026\/01\/12\/configuracio-dovecot-servidor-de-correu-entrant\/\" aria-label=\"Read more about CONFIGURACI\u00d3 DOVECOT &#8211; SERVIDOR DE CORREU ENTRANT\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9199","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CONFIGURACI\u00d3 DOVECOT - SERVIDOR DE CORREU ENTRANT - Ana Borrego Toledo<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CONFIGURACI\u00d3 DOVECOT - SERVIDOR DE CORREU ENTRANT - Ana Borrego Toledo\" \/>\n<meta property=\"og:description\" content=\"CONFIGURACI\u00d3 DOVECOT &#8211; SERVIDOR DE CORREU ENTRANT Tornar al repte 2.2 PART 1: CREACI\u00d3 D&#8217;USUARIS DEL SISTEMA 1.1 &#8211; CREAR ELS USUARIS useradd [opcions] nom_usuari Verifica que els directoris home s&#8217;han creat: ls -la \/home\/ 1.2 &#8211; ASSIGNAR CONTRASENYES ALS USUARIS SEGUINT LA NOSTRA POL\u00cdTICA DE CONTRASENYAS passwd nom_usuari PART 2: INSTAL\u00b7LACI\u00d3 DE DOVECOT 2.1 &#8211; REPOSITORIS I FONTS DEL PAQUET Concepte: Qu\u00e8 \u00e9s un repositori? Un repositori \u00e9s un servidor que cont\u00e9 paquets de programari compilats i preparats per instal\u00b7lar.\u00a0 A Rocky Linux, els repositoris oficials s\u00f3n: BaseOS: Paquets base del sistema operatiu AppStream: Aplicacions i eines addicionals Extras: Paquets complementaris Comprovem quins repositoris tenim actius i busquem Dovecot als repositoris:: dnf repolist dnf search dovecot Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 2.2 &#8211; INSTAL\u00b7LACI\u00d3 DE DOVECOT dnf install dovecot -y Verifica que s&#8217;ha instal\u00b7lat correctament: # Versi&oacute; de Dovecot dovecot --version # Estat del servei (encara no est&agrave; iniciat) systemctl status dovecot # Fitxers instal&middot;lats rpm -ql dovecot | head -20 PART 3: CONFIGURACI\u00d3 DE DOVECOT 3.1 &#8211; C\u00d2PIA DE SEGURETAT (MOLT IMPORTANT!) \u00a0 Concepte: Per qu\u00e8 fer c\u00f2pies de seguretat? Abans de modificar QUALSEVOL fitxer de configuraci\u00f3, SEMPRE has de fer una c\u00f2pia de seguretat. Per qu\u00e8? Si fas un error, pots recuperar la configuraci\u00f3 original Pots comparar els canvis que has fet \u00c9s una pr\u00e0ctica professional obligat\u00f2ria. Fem la c\u00f2pia de seguretat: # Copiar tot el directori de configuraci&oacute; cp -r \/etc\/dovecot \/etc\/dovecot.backup # Verificar que s&#039;ha copiat ls -la \/etc\/ | grep dovecot Ara ja pots modificar fitxers amb tranquil\u00b7litat! Si fas malb\u00e9 alguna cosa, pots restaurar amb: \u00a0 rm -rf \/etc\/dovecot cp -r \/etc\/dovecot.backup \/etc\/dovecot Editem el fitxer de configuraci\u00f3: vim \/etc\/dovecot\/conf.d\/10-mail.conf Busca la l\u00ednia mail_location.\u00a0 Aquesta l\u00ednia est\u00e0 comentada (t\u00e9 # al davant), per tant no est\u00e0 activa. Modifica-la aix\u00ed: # ABANS #mail_location = mbox:~\/mail:INBOX=\/var\/mail\/%u # DESPR&Eacute;S # Ubicaci&oacute; dels correus: format Maildir al directori home de cada usuari # maildir: indica el format Maildir (un fitxer per correu) # ~\/Maildir: cada usuari tindr&agrave; una carpeta Maildir al seu home (\/home\/usuari\/Maildir) # Aquest format &eacute;s m&eacute;s segur, r&agrave;pid i fiable que mbox mail_location = maildir:~\/Maildir Explicaci\u00f3 l\u00ednia per l\u00ednia: maildir: \u2192 Especifica que usem format Maildir ~\/Maildir \u2192 ~ significa el home de l&#8217;usuari (\/home\/aborrego\/Maildir) Cada usuari tindr\u00e0 la seva pr\u00f2pia carpeta Maildir 3.3 &#8211; CREAR LES CARPETES MAILDIR PER ALS USUARIS \u00a0 Cada usuari necessita tenir aquesta estructura creada:\u00a0 \u00a0 \/home\/usuari\/Maildir\/\u251c\u2500\u2500 new\/ \u2190 Aqu\u00ed arriben els correus nous\u251c\u2500\u2500 cur\/ \u2190 Correus llegits o marcats\u2514\u2500\u2500 tmp\/ \u2190 Zona temporal durant la recepci\u00f3 \u00a0 Per qu\u00e8 3 carpetes? tmp\/: Quan arriba un correu, primer es guarda aqu\u00ed (per evitar corrupci\u00f3) new\/: Quan el correu est\u00e0 complet, es mou aqu\u00ed (correu nou, no llegit) cur\/: Quan l&#8217;usuari llegeix el correu, es mou aqu\u00ed Creem les carpetes per cada usuari: # Usuari: aborrego mkdir -p \/home\/aborrego\/Maildir\/{new,cur,tmp} chown -R aborrego:aborrego \/home\/aborrego\/Maildir chmod -R 700 \/home\/aborrego\/Maildir # Usuari: alozano mkdir -p \/home\/alozano\/Maildir\/{new,cur,tmp} chown -R alozano:alozano \/home\/alozano\/Maildir chmod -R 700 \/home\/alozano\/Maildir # Usuari: hbravo mkdir -p \/home\/hbravo\/Maildir\/{new,cur,tmp} chown -R hbravo:hbravo \/home\/hbravo\/Maildir chmod -R 700 \/home\/hbravo\/Maildir 3.4 &#8211; CONFIGURACI\u00d3 DE PROTOCOLS (IMAP, POP3, LMTP) Concepte: Protocols de correu \u00a0 IMAP (Internet Message Access Protocol) &#8211; Port 143\/993 Client \u2190\u2500\u2500\u2192 Servidor\u00a0 Com funciona: Els correus es queden al servidor Avantatge: Sincronitzaci\u00f3 entre m\u00faltiples dispositius (m\u00f2bil, PC, web) Ideal per: Usuaris que accedeixen des de m\u00faltiples llocs Port 143**: IMAP sense xifrar &#8211; NO recomanat Port 993**: IMAPS (IMAP amb SSL\/TLS) &#8211; RECOMANAT POP3 (Post Office Protocol) &#8211; Port 110\/995** Client \u2190\u2500\u2500 Servidor Com funciona: Descarrega els correus al client i els esborra del servidor. Desavantatge: Els correus nom\u00e9s estan en 1 dispositiu Ideal per: Usuaris amb 1 sol dispositiu i espai limitat al servidor &#8211; Port 110**: POP3 sense xifrar (NO recomanat) &#8211; Port 995**: POP3S (POP3 amb SSL\/TLS) &#8211; RECOMANAT \u00a0 LMTP (Local Mail Transfer Protocol) Postfix \u2500\u2500\u2192 Dovecot (SMTP) (LMTP) Editem el fitxer principal de Dovecot: Busca la l\u00ednia protocols. Modifica-la aix\u00ed: # ABANS: #protocols = imap pop3 lmtp submission # DESPR&Eacute;S: protocols = imap pop3 lmtp Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 3.5 &#8211; CONFIGURACI\u00d3 D&#8217;AUTENTICACI\u00d3 Concepte: Com s&#8217;autentiquen els usuaris? \u00a0 Quan un usuari intenta accedir al seu correu, Dovecot ha de verificar la seva identitat:\u00a0 \u00a0 Client: &#8220;Soc aborrego, la meva contrasenya \u00e9s XYZ&#8221; Dovecot: &#8220;Deixa&#8217;m comprovar&#8230;&#8221; Dovecot comprova \u2192 \/etc\/shadow Dovecot: &#8220;Correcte! Aqu\u00ed tens els teus correus&#8221; \u00a0 Mecanismes d&#8217;autenticaci\u00f3: Nosaltres usarem PLAIN i LOGIN sobre SSL\/TLS (segur i compatible). \u00a0 Editem el fitxer d&#8217;autenticaci\u00f3: vi \/etc\/dovecot\/conf.d\/10-auth.conf Busca i modifica aquestes l\u00ednies: 1. Desactivar autenticaci\u00f3 en text pla sense SSL: # BUSCA: disable_plaintext_auth = yes # MODIFICA A: disable_plaintext_auth = yes # Desactivar autenticaci&oacute; en text pla sense SSL\/TLS # Aix&ograve; for&ccedil;a que els usuaris SEMPRE usin connexions xifrades (IMAPS\/POP3S) # Si intenten connectar sense SSL amb usuari\/contrasenya, es rebutjar&agrave; 2. Mecanismes d&#8217;autenticaci\u00f3: # BUSCA: auth_mechanisms = plain # MODIFICA A: auth_mechanisms = plain login # Mecanismes d&#039;autenticaci&oacute; permesos: # - plain: usuari i contrasenya (sobre SSL &eacute;s segur) # - login: compatible amb m&eacute;s clients de correu (Outlook, etc.) 3. Habilitar autenticaci\u00f3 amb usuaris del sistema: # BUSCA: #!include auth-system.conf.ext # MODIFICA A: !include auth-system.conf.ext # Incloure configuraci&oacute; per autenticar amb usuaris del sistema Linux # Aix&ograve; permet que aborrego, alozano i hbravo s&#039;autentiquin amb les seves contrasenyes 4. Desactivar altres m\u00e8todes d&#8217;autenticaci\u00f3 (per ara): ASSEGURA&#8217;T que aquestes l\u00ednies ESTAN comentades (amb #): # No utilitzem autenticaci&oacute; SQL per ara (ho farem despr&eacute;s per usuaris virtuals) #!include auth-sql.conf.ext # No utilitzem LDAP #!include auth-ldap.conf.ext # No utilitzem base de dades est&agrave;tica #!include auth-static.conf.ext PART 4: CONFIGURACI\u00d3 SSL\/TLS 4.1 &#8211; CONCEPTE: Qu\u00e8 \u00e9s SSL\/TLS i per qu\u00e8 \u00e9s important? \u00a0 SSL\/TLS (Secure Sockets Layer \/ Transport Layer Security) Quan un client de correu (Outlook, Thunderbird, m\u00f2bil) es connecta al servidor: Sense SSL\/TLS: Client \u2500\u2500\u2500\u2500\u2500&rarr; [usuari: aborrego] [password: 1234] \u2500\u2500\u2500\u2500\u2500&rarr; Servidor ... 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SERVIDOR DE CORREU ENTRANT Tornar al repte 2.2 PART 1: CREACI\u00d3 D&#8217;USUARIS DEL SISTEMA 1.1 &#8211; CREAR ELS USUARIS useradd [opcions] nom_usuari Verifica que els directoris home s&#8217;han creat: ls -la \/home\/ 1.2 &#8211; ASSIGNAR CONTRASENYES ALS USUARIS SEGUINT LA NOSTRA POL\u00cdTICA DE CONTRASENYAS passwd nom_usuari PART 2: INSTAL\u00b7LACI\u00d3 DE DOVECOT 2.1 &#8211; REPOSITORIS I FONTS DEL PAQUET Concepte: Qu\u00e8 \u00e9s un repositori? Un repositori \u00e9s un servidor que cont\u00e9 paquets de programari compilats i preparats per instal\u00b7lar.\u00a0 A Rocky Linux, els repositoris oficials s\u00f3n: BaseOS: Paquets base del sistema operatiu AppStream: Aplicacions i eines addicionals Extras: Paquets complementaris Comprovem quins repositoris tenim actius i busquem Dovecot als repositoris:: dnf repolist dnf search dovecot Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 2.2 &#8211; INSTAL\u00b7LACI\u00d3 DE DOVECOT dnf install dovecot -y Verifica que s&#8217;ha instal\u00b7lat correctament: # Versi&oacute; de Dovecot dovecot --version # Estat del servei (encara no est&agrave; iniciat) systemctl status dovecot # Fitxers instal&middot;lats rpm -ql dovecot | head -20 PART 3: CONFIGURACI\u00d3 DE DOVECOT 3.1 &#8211; C\u00d2PIA DE SEGURETAT (MOLT IMPORTANT!) \u00a0 Concepte: Per qu\u00e8 fer c\u00f2pies de seguretat? Abans de modificar QUALSEVOL fitxer de configuraci\u00f3, SEMPRE has de fer una c\u00f2pia de seguretat. Per qu\u00e8? Si fas un error, pots recuperar la configuraci\u00f3 original Pots comparar els canvis que has fet \u00c9s una pr\u00e0ctica professional obligat\u00f2ria. Fem la c\u00f2pia de seguretat: # Copiar tot el directori de configuraci&oacute; cp -r \/etc\/dovecot \/etc\/dovecot.backup # Verificar que s&#039;ha copiat ls -la \/etc\/ | grep dovecot Ara ja pots modificar fitxers amb tranquil\u00b7litat! Si fas malb\u00e9 alguna cosa, pots restaurar amb: \u00a0 rm -rf \/etc\/dovecot cp -r \/etc\/dovecot.backup \/etc\/dovecot Editem el fitxer de configuraci\u00f3: vim \/etc\/dovecot\/conf.d\/10-mail.conf Busca la l\u00ednia mail_location.\u00a0 Aquesta l\u00ednia est\u00e0 comentada (t\u00e9 # al davant), per tant no est\u00e0 activa. Modifica-la aix\u00ed: # ABANS #mail_location = mbox:~\/mail:INBOX=\/var\/mail\/%u # DESPR&Eacute;S # Ubicaci&oacute; dels correus: format Maildir al directori home de cada usuari # maildir: indica el format Maildir (un fitxer per correu) # ~\/Maildir: cada usuari tindr&agrave; una carpeta Maildir al seu home (\/home\/usuari\/Maildir) # Aquest format &eacute;s m&eacute;s segur, r&agrave;pid i fiable que mbox mail_location = maildir:~\/Maildir Explicaci\u00f3 l\u00ednia per l\u00ednia: maildir: \u2192 Especifica que usem format Maildir ~\/Maildir \u2192 ~ significa el home de l&#8217;usuari (\/home\/aborrego\/Maildir) Cada usuari tindr\u00e0 la seva pr\u00f2pia carpeta Maildir 3.3 &#8211; CREAR LES CARPETES MAILDIR PER ALS USUARIS \u00a0 Cada usuari necessita tenir aquesta estructura creada:\u00a0 \u00a0 \/home\/usuari\/Maildir\/\u251c\u2500\u2500 new\/ \u2190 Aqu\u00ed arriben els correus nous\u251c\u2500\u2500 cur\/ \u2190 Correus llegits o marcats\u2514\u2500\u2500 tmp\/ \u2190 Zona temporal durant la recepci\u00f3 \u00a0 Per qu\u00e8 3 carpetes? tmp\/: Quan arriba un correu, primer es guarda aqu\u00ed (per evitar corrupci\u00f3) new\/: Quan el correu est\u00e0 complet, es mou aqu\u00ed (correu nou, no llegit) cur\/: Quan l&#8217;usuari llegeix el correu, es mou aqu\u00ed Creem les carpetes per cada usuari: # Usuari: aborrego mkdir -p \/home\/aborrego\/Maildir\/{new,cur,tmp} chown -R aborrego:aborrego \/home\/aborrego\/Maildir chmod -R 700 \/home\/aborrego\/Maildir # Usuari: alozano mkdir -p \/home\/alozano\/Maildir\/{new,cur,tmp} chown -R alozano:alozano \/home\/alozano\/Maildir chmod -R 700 \/home\/alozano\/Maildir # Usuari: hbravo mkdir -p \/home\/hbravo\/Maildir\/{new,cur,tmp} chown -R hbravo:hbravo \/home\/hbravo\/Maildir chmod -R 700 \/home\/hbravo\/Maildir 3.4 &#8211; CONFIGURACI\u00d3 DE PROTOCOLS (IMAP, POP3, LMTP) Concepte: Protocols de correu \u00a0 IMAP (Internet Message Access Protocol) &#8211; Port 143\/993 Client \u2190\u2500\u2500\u2192 Servidor\u00a0 Com funciona: Els correus es queden al servidor Avantatge: Sincronitzaci\u00f3 entre m\u00faltiples dispositius (m\u00f2bil, PC, web) Ideal per: Usuaris que accedeixen des de m\u00faltiples llocs Port 143**: IMAP sense xifrar &#8211; NO recomanat Port 993**: IMAPS (IMAP amb SSL\/TLS) &#8211; RECOMANAT POP3 (Post Office Protocol) &#8211; Port 110\/995** Client \u2190\u2500\u2500 Servidor Com funciona: Descarrega els correus al client i els esborra del servidor. Desavantatge: Els correus nom\u00e9s estan en 1 dispositiu Ideal per: Usuaris amb 1 sol dispositiu i espai limitat al servidor &#8211; Port 110**: POP3 sense xifrar (NO recomanat) &#8211; Port 995**: POP3S (POP3 amb SSL\/TLS) &#8211; RECOMANAT \u00a0 LMTP (Local Mail Transfer Protocol) Postfix \u2500\u2500\u2192 Dovecot (SMTP) (LMTP) Editem el fitxer principal de Dovecot: Busca la l\u00ednia protocols. Modifica-la aix\u00ed: # ABANS: #protocols = imap pop3 lmtp submission # DESPR&Eacute;S: protocols = imap pop3 lmtp Qu\u00e8 s\u00f3n aquests paquets? dovecot: Paquet principal (IMAP\/POP3) dovecot-pigeonhole: Plugin per filtres de correu (Sieve) dovecot-mysql\/pgsql: Per usuaris virtuals en base de dades. 3.5 &#8211; CONFIGURACI\u00d3 D&#8217;AUTENTICACI\u00d3 Concepte: Com s&#8217;autentiquen els usuaris? \u00a0 Quan un usuari intenta accedir al seu correu, Dovecot ha de verificar la seva identitat:\u00a0 \u00a0 Client: &#8220;Soc aborrego, la meva contrasenya \u00e9s XYZ&#8221; Dovecot: &#8220;Deixa&#8217;m comprovar&#8230;&#8221; Dovecot comprova \u2192 \/etc\/shadow Dovecot: &#8220;Correcte! Aqu\u00ed tens els teus correus&#8221; \u00a0 Mecanismes d&#8217;autenticaci\u00f3: Nosaltres usarem PLAIN i LOGIN sobre SSL\/TLS (segur i compatible). \u00a0 Editem el fitxer d&#8217;autenticaci\u00f3: vi \/etc\/dovecot\/conf.d\/10-auth.conf Busca i modifica aquestes l\u00ednies: 1. Desactivar autenticaci\u00f3 en text pla sense SSL: # BUSCA: disable_plaintext_auth = yes # MODIFICA A: disable_plaintext_auth = yes # Desactivar autenticaci&oacute; en text pla sense SSL\/TLS # Aix&ograve; for&ccedil;a que els usuaris SEMPRE usin connexions xifrades (IMAPS\/POP3S) # Si intenten connectar sense SSL amb usuari\/contrasenya, es rebutjar&agrave; 2. Mecanismes d&#8217;autenticaci\u00f3: # BUSCA: auth_mechanisms = plain # MODIFICA A: auth_mechanisms = plain login # Mecanismes d&#039;autenticaci&oacute; permesos: # - plain: usuari i contrasenya (sobre SSL &eacute;s segur) # - login: compatible amb m&eacute;s clients de correu (Outlook, etc.) 3. Habilitar autenticaci\u00f3 amb usuaris del sistema: # BUSCA: #!include auth-system.conf.ext # MODIFICA A: !include auth-system.conf.ext # Incloure configuraci&oacute; per autenticar amb usuaris del sistema Linux # Aix&ograve; permet que aborrego, alozano i hbravo s&#039;autentiquin amb les seves contrasenyes 4. Desactivar altres m\u00e8todes d&#8217;autenticaci\u00f3 (per ara): ASSEGURA&#8217;T que aquestes l\u00ednies ESTAN comentades (amb #): # No utilitzem autenticaci&oacute; SQL per ara (ho farem despr&eacute;s per usuaris virtuals) #!include auth-sql.conf.ext # No utilitzem LDAP #!include auth-ldap.conf.ext # No utilitzem base de dades est&agrave;tica #!include auth-static.conf.ext PART 4: CONFIGURACI\u00d3 SSL\/TLS 4.1 &#8211; CONCEPTE: Qu\u00e8 \u00e9s SSL\/TLS i per qu\u00e8 \u00e9s important? \u00a0 SSL\/TLS (Secure Sockets Layer \/ Transport Layer Security) Quan un client de correu (Outlook, Thunderbird, m\u00f2bil) es connecta al servidor: Sense SSL\/TLS: Client \u2500\u2500\u2500\u2500\u2500&rarr; [usuari: aborrego] [password: 1234] \u2500\u2500\u2500\u2500\u2500&rarr; Servidor ... 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