{"id":621,"date":"2020-12-30T02:32:18","date_gmt":"2020-12-30T05:32:18","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/how-to-install-mailcow\/"},"modified":"2026-05-16T10:13:09","modified_gmt":"2026-05-16T13:13:09","slug":"how-to-install-mailcow","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-mailcow\/","title":{"rendered":"How to install mailserver Mailcow"},"content":{"rendered":"<div id=\"helps-2831730557\" class=\"helps-before-content-2 helps-entity-placement\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- 2anuncios display quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"5051229894\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<p class=\"wp-block-paragraph\"><a aria-label=\"Mailcow (opens in a new tab)\" data-schema-attribute=\"mentions\" href=\"https:\/\/mailcow.email\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"rank-math-link\">Mailcow<\/a> , is a complete Email server, which we like to point out, has a very active community, updates, news and fixes almost daily. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At <a aria-label=\" (opens in a new tab)\" data-schema-attribute=\"mentions\" class=\"rank-math-link\" href=\"https:\/\/helpsysadmin.com.br\" target=\"_blank\" rel=\"noreferrer noopener\">HelpSysAdmin<\/a> we have several clients that use Mailcow to host email services for their clients&#8217; numerous domains. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow uses Anti Spam Rspamd with dozens of rules and plugins installed and pre-configured; after a few tweaks, customers really feel the difference from other not so good anti spam solutions. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Anti virus used is ClamAV which has great advantages, such as the installation of additional signatures Anti Virus, Anti Phishing, Anti Malware and others as <a aria-label=\"abordamos em outro post (opens in a new tab)\" data-schema-attribute=\"mentions\" class=\"rank-math-link\" href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/antivirus-antimalware-antiphishing-on-centos-or-cloudlinux-with-clamav\/\" target=\"_blank\" rel=\"noreferrer noopener\">we discussed in another post<\/a> , to summarize, the Webmail used is <a aria-label=\"SOGo Groupware (opens in a new tab)\" data-schema-attribute=\"mentions\" class=\"rank-math-link\" href=\"https:\/\/sogo.nu\/\" target=\"_blank\" rel=\"noreferrer noopener\">SOGo Groupware<\/a> which has much more than Send email function.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HelpSysAdmin offers the service of installation, configuration, optimization, support for 7 days after installation for any feature or configuration, as well as <strong><a aria-label=\"MailCow por (R$ 80,00 ) (opens in a new tab)\" data-schema-attribute=\"mentions\" class=\"rank-math-link\" href=\"https:\/\/helpsysadmin.com.br\/instalacao-servidor-de-email-mailcow\/\" target=\"_blank\" rel=\"noreferrer noopener\">MailCow improvements for (R$ 80.00)<\/a><\/strong> . <br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Next, we&#8217;ll cover Mailcow&#8217;s default installation and configuration<\/strong> .<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-preparations-before-installing-mailcow\">Preparations before installing Mailcow<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before starting the installation, you need to make some preparations regarding the DNS of the domain you want to use as the main one in Mailcow. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the purpose of example and easy understanding we will use a domain that we use for tests, helpsysadmin.ml . For DNS management, we will use Cloudflare, to exemplify filling in the DNS entries that will be needed. If you prefer, use your domain&#8217;s host DNS manager.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow is compatible with Ubuntu 18 and 20. We are going to use Ubuntu 20. Mailcow needs a subdomain that will be the URL for accessing the panels and necessary for configuring the Mail client (you can create others later). This subdomain must be the hostname of your server and have the reverse configured with your Data Center.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-let-s-use-mail-helpsysadmin-ml\">Let&#8217;s use <strong>mail.helpsysadmin.ml<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; Update your Ubuntu server and restart<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>apt update; apt upgrade -y;<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211; Access the Shell and Configure the Hostname of your server<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>hostnamectl set-hostname mail.helpsysadmin.ml<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">3 &#8211; Set the server&#8217;s Time Zone to America\/Sao_Paulo<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>timedatectl set-timezone America\/Sao_Paulo<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">4 &#8211; Access your DNS Manager and create an entry of type A with name mail, pointing to the IP of your server. Here we are going to use CloudFlare<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1656519849  fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"217\" src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:217\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg\" alt=\"\" class=\"wp-image-163\" srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:217\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 1024w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:64\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:163\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:195\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:49\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:74\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:102\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 480w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:1038\/h:220\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/entrada-a-cloudflare-wpp1610147867140.jpg 1038w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">5 &#8211; With the entry created, now it&#8217;s time to change the reverse <strong>IP<\/strong> (rDNS) to your hostname ( <strong>mail.helpsysadmin.ml<\/strong> ). You can make this change with your Data Center or VPS provider.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6 &#8211; Add the IP and hostname in hosts<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>nano \/etc\/hosts<\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1021893847  fetchpriority=\"high\" decoding=\"async\" width=\"894\" height=\"319\" src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg\" alt=\"\" class=\"wp-image-164\" srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:894\/h:319\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 894w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:107\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:274\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:82\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:125\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:171\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/hosts.jpg 480w\" sizes=\"(max-width: 894px) 100vw, 894px\" \/><figcaption class=\"wp-element-caption\">Fill according to the image<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-creating-swap-for-the-server\">Creating SWAP for the Server<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you still don&#8217;t have SWAP created on your server, follow the steps below. Let&#8217;s create a 4GB SWAP file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; create the file for swap, change permissions and enable swap<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>dd if=\/dev\/zero of=\/swapfile count=4096 bs=1MiB\nchmod 600 \/swapfile\nmkswap \/swapfile\nswapon \/swapfile<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211; confirm that swap was created correctly<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>free -m<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3 &#8211; edit \/etc\/fstab file and add<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>\/swapfile   swap    swap    sw  0   0<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-installing-docker-and-docker-compose\">Installing docker and docker-compose<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; Install Docker , enable and start <\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>curl -sSL https:\/\/get.docker.com\/ | CHANNEL=stable sh\nsystemctl enable docker.service\nsystemctl start docker.service<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211; Install docker-compose<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>curl -L https:\/\/github.com\/docker\/compose\/releases\/download\/$(curl -Ls https:\/\/www.servercow.de\/docker-compose\/latest.php)\/docker-compose-$(uname -s)-$(uname -m) &gt; \/usr\/local\/bin\/docker-compose\nchmod +x \/usr\/local\/bin\/docker-compose<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-installing-mailcow\">Installing Mailcow<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; Install git<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>apt install git -y<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211; Downloading Mailcow <\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>cd \/opt\ngit clone https:\/\/github.com\/mailcow\/mailcow-dockerized\ncd mailcow-dockerized<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">3 &#8211; Generating the configuration file. Remember to enter your hostname when asking for your FQDN<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>.\/generate_config.sh<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">4 &#8211; Change the configuration if you need to<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>nano mailcow.conf<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">5 &#8211; Extract the images and run the docker file<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>docker-compose pull\ndocker-compose up -d<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">6 &#8211; Access Mailcow and change the admin password<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/yourhostname\/admin<br>User: admin<br>Password: moohoo<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=512044160  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg\"  decoding=\"async\" width=\"800\" height=\"481\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Accessing MailCow for the first time\" class=\"wp-image-174\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:800\/h:481\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 800w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:180\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:462\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:138\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:210\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:289\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/acessando-mailcow.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">7 &#8211; Changing the admin password as soon as possible<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img data-opt-id=207585314  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:266\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg\"  decoding=\"async\" width=\"1024\" height=\"266\" data-id=\"175\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201024%20266%22%20width%3D%221024%22%20height%3D%22266%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221024%22%20height%3D%22266%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Change Mailcow Admin Password\" class=\"wp-image-175\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:266\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 1024w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:78\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:199\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:239\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:60\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:91\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:125\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 480w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:1499\/h:389\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/altere-senha-admin-mailcow.jpg 1499w\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-configuring-mailcow\">Configuring MailCow<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In this part, the most important thing is to configure the NS entries for the hostname you have chosen. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let&#8217;s continue using CloudFlare, which is where our domain is pointed. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; Continuing on the Mailcow dashboard, Logged in as admin, click Configuration &gt;&gt; Accounts, then click Add Domain.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=389684633  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg\"  decoding=\"async\" width=\"640\" height=\"193\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Configuring primary domain\" class=\"wp-image-178\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:640\/h:193\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg 640w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:90\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:69\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:106\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:145\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/configura-hostname.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211; On this screen, enter your main domain and adjust the limits for your account. At the end click on &#8221; <strong>Add domain and restart SOGo<\/strong> &#8220;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-opt-id=1951500875  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg\"  decoding=\"async\" width=\"689\" height=\"877\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-179\" style=\"width:431px;height:549px\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:689\/h:877\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg 689w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:236\/h:300\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg 236w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:293\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:446\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:611\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/adiciona-dominio-principal.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3 &#8211; The account you just created will be listed as shown below. Click on the DNS icon<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=793377733  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/conf-dns-mailcow.jpg\"  decoding=\"async\" width=\"150\" height=\"133\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Click the DNS button\" class=\"wp-image-183\"\/><figcaption class=\"wp-element-caption\">Click the DNS Button<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">4 &#8211; This part is very important and you won&#8217;t need to configure it every time you host a new domain. To fill in we will use our domain that is in <a href=\"https:\/\/cloudflare.com\" class=\"rank-math-link\">CloudFlare<\/a> . Obviously the green one is OK. What is in red X we need to create in cloudflare. See the image below:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> the first two entries that are in green inform you that you created the rDNS reverse IP correctly (we covered this topic at the beginning of this text)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5 &#8211; Creating NS entries in CloudFlare, one by one<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> note that we are now going to create entries for mail and no longer for the root of the domain:<br><br>6 &#8211; Below is an example of how to create a TLSA entry. Execute the same according to the table above<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=532796798  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg\"  decoding=\"async\" width=\"1020\" height=\"393\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-188\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1020\/h:393\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 1020w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:116\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:296\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:354\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:89\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:135\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:185\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada25tlsa.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7 &#8211; After filling all the TLSA entries the result will be this:<br><br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1177671062  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg\"  decoding=\"async\" width=\"600\" height=\"298\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"TLSA CloudFlare Entries\" class=\"wp-image-189\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:600\/h:298\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg 600w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:149\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:114\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:174\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:238\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/tlsa-mailcow.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">8 &#8211; Finalizing the main domain settings<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As we could see in the table of item 4, some essential entries are still missing for the MailCow configuration. Let&#8217;s go to them:<br><br>&#8211; MX entries are DNS information that declares and directs mail services to the correct mail server.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1333094244  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png\"  decoding=\"async\" width=\"1022\" height=\"163\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"MX Input helpsysadmin\" class=\"wp-image-217\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1022\/h:163\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 1022w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:48\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:122\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:147\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:37\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:56\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:77\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/entrada-mx-cloudflare.png 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8211; SRV input <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1677988915  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg\"  decoding=\"async\" width=\"932\" height=\"305\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"DNS Srv entry\" class=\"wp-image-190\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:932\/h:305\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 932w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:98\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:251\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:301\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:75\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:115\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:157\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/srv-mailcow.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ready! Let&#8217;s check that everything is ok now, to finally host email accounts, domains etc&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">9 &#8211; As you did in option 3 click on the DNS button and wait. Expected result is &#8220;green&#8221; for everything except SPF and DKIM which we haven&#8217;t configured yet<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1446959729  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg\"  decoding=\"async\" width=\"791\" height=\"842\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Mailcow Full DNS\" class=\"wp-image-193\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:791\/h:842\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 791w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:282\/h:300\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 282w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:818\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:245\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:373\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:511\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dns-completo-mailcow-wpp1610147388362.jpg 480w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">9 &#8211; Finishing with the DKIM and SPF configuration<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the MailCow Control Panel, click on the upper right menu (Settings&gt;&gt; Administration):<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1893461219  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-admin.jpg\"  decoding=\"async\" width=\"238\" height=\"155\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-196\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:238\/h:155\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-admin.jpg 238w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:150\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-admin.jpg 230w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">10 &#8211; Next left menu, locate and click Administration &gt;&gt; ARC\/DKIM Registry<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=2056593711  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-dkim.jpg\"  decoding=\"async\" width=\"465\" height=\"332\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"DKIM Mailcow\" class=\"wp-image-199\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:465\/h:332\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-dkim.jpg 465w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:214\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-dkim.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:164\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-dkim.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:250\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/configuraca-dkim.jpg 350w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">11 &#8211; With each new domain you host, you must generate a DKIN and adjust the SPF for it. Fill in as follows:<br><br><strong>Domain\/s<\/strong> : domain referring to the account you just created<br><strong>Selector<\/strong> : I suggest leaving the default &#8220;dekin&#8221; (without quotes)<br><strong>DKIM record size<\/strong> : I like to use 2048 bits<br><br>To finish click on &#8221; <strong>+Save<\/strong> &#8221; . Note that a private key has been created for DKIM, we will use this key in our DNS provider.<br><br>As for SPF, it&#8217;s a very important and simple task, so we&#8217;ll cover it in the next topic, about configuring DKIM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">12 &#8211; DKIM<br>Add a TXT entry named dkim._domainkey and in the content field, paste the Prive Key that we generated in the previous step<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1591996508  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:314\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg\"  decoding=\"async\" width=\"1024\" height=\"314\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201024%20314%22%20width%3D%221024%22%20height%3D%22314%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221024%22%20height%3D%22314%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Input DKIM Cloud HelpSysAdmin\" class=\"wp-image-202\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:314\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 1024w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:92\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:236\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:283\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:71\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:107\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:147\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 480w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:1029\/h:316\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/dkim-cloudflare.jpg 1029w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Enter the SPF<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1218492003  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:105\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg\"  decoding=\"async\" width=\"1024\" height=\"105\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201024%20105%22%20width%3D%221024%22%20height%3D%22105%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221024%22%20height%3D%22105%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"SPF MAILCOW\" class=\"wp-image-222\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:105\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 1024w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:31\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:79\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:95\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:24\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:36\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:49\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 480w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:1136\/h:117\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/spf.jpg 1136w\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-commenting-on-latest-important-features\">Commenting on latest important features<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; MailCow is fully integrated with Rspamd and has an interface where you can adjust score, filters, view logs, etc. I suggest being very careful with the interface, use very secure passwords and restrict access.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To access the first one we will create a password (very secure). <br>Access the MailCow Dashboard from the main page, find Rspamd. Modify the password and click the &#8221; <strong>Rspamd UI<\/strong> &#8221; link<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=667323053  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:227\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png\"  decoding=\"async\" width=\"1024\" height=\"227\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201024%20227%22%20width%3D%221024%22%20height%3D%22227%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221024%22%20height%3D%22227%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-208\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:1024\/h:227\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 1024w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:66\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:170\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:920\/h:204\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 920w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:51\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:78\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:106\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 480w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:1358\/h:301\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2021\/01\/rspamd.png 1358w\" \/><figcaption class=\"wp-element-caption\">click the link to access rspamd after changing password<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Be careful with changes to rspamd, symbols, configurations etc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do you want to have MailCow\/Antivirus, Backups etc, optimized, installed and configured with all our experience and 7 days support? <a href=\"https:\/\/helpsysadmin.com.br\/en\/mailcow-email-server-installation\/\" target=\"_blank\" data-schema-attribute=\"about mentions\" rel=\"noreferrer noopener\">Count on us, we are here!<\/a>\ud83d\ude42<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hope this post helped you!!! To the next \ud83d\ude42<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"block-a4be4724-3d6b-4ad2-b61f-68ba6755adc9\">See more: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-glances-to-monitor-the-server\/\">How to install Glances to monitor the server<\/a><\/strong><br>See more: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-engintronnginx-cpanel-whm\/\">How to install Engintron(NGINX) cPanel\/WHM<\/a><\/strong><br>See more: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/finding-the-number-of-email-accounts-on-cpanel-server\/\">Finding the number of email accounts on cPanel server<\/a><\/strong><br>See more: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-crowdsec\/\">How to install Crowdsec<\/a><\/strong><br>Veja mais: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-instalar-mailcow\/\" target=\"_blank\" rel=\"noreferrer noopener\">Como instalar o servidor de e-mail Mailcow<\/a><\/strong><br>See more: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/install-portainer-for-docker-with-nginx-proxy-manager\/\">How to Install Portainer for Docker Management with Nginx Proxy Manager on Ubuntu<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mailcow , is a complete Email server, which we like to point out, has a very active community, updates, news and fixes [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":564,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1204],"tags":[1227,1263,1266],"class_list":["post-621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server-management","tag-docker-en","tag-mail-server","tag-mailcow-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How to install mailserver Mailcow<\/title>\n<meta name=\"description\" content=\"How to install mailserver Mailcow with antispam rspamd with dozens of preconfigured rules and antivirus clamav\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-mailcow\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to install mailserver Mailcow\" \/>\n<meta property=\"og:description\" content=\"How to install mailserver Mailcow with antispam rspamd with dozens of preconfigured rules and antivirus clamav\" \/>\n<meta property=\"og:url\" content=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-mailcow\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog HelpSysAdmin\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-30T05:32:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-16T13:13:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/instalar-mailcow.jpg\" \/>\n<meta name=\"author\" content=\"HelpSysAdmin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@brhelpsysad\" \/>\n<meta name=\"twitter:site\" content=\"@brhelpsysad\" \/>\n<script type=\"application\/ld+json\" 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