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<a href="post_installation/firststeps-sync_jobs_migration/" class="md-nav__link">
Sync job migration
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5" >
<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
Models
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_5">
<span class="md-nav__icon md-icon"></span>
Models
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="models/model-acl/" class="md-nav__link">
ACL
</a>
</li>
<li class="md-nav__item">
<a href="models/model-passwd/" class="md-nav__link">
Password hashing
</a>
</li>
<li class="md-nav__item">
<a href="models/model-sender_rcv/" class="md-nav__link">
Sender and receiver model
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" >
<label class="md-nav__link" for="__nav_6" id="__nav_6_label" tabindex="0">
General Troubleshooting
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_6">
<span class="md-nav__icon md-icon"></span>
General Troubleshooting
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="troubleshooting/debug/" class="md-nav__link">
Introduction
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-admin_login_sogo/" class="md-nav__link">
Admin login to SOGo
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-rspamd_memory_leaks/" class="md-nav__link">
Advanced: Find memory leaks in Rspamd
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-attach_service/" class="md-nav__link">
Attach to a Container
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-common_problems/" class="md-nav__link">
Common Problems
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-logs/" class="md-nav__link">
Logs
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-mysql_upgrade/" class="md-nav__link">
Manual MySQL upgrade
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-mysql_aria/" class="md-nav__link">
Recover crashed Aria storage engine
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-rm_volumes/" class="md-nav__link">
Remove Persistent Data
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-reset_pw/" class="md-nav__link">
Reset Passwords (incl. SQL)
</a>
</li>
<li class="md-nav__item">
<a href="troubleshooting/debug-reset_tls/" class="md-nav__link">
Reset TLS certificates
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" >
<label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0">
Backup & Restore
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_7">
<span class="md-nav__icon md-icon"></span>
Backup & Restore
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7_1" >
<label class="md-nav__link" for="__nav_7_1" id="__nav_7_1_label" tabindex="0">
Component backup & restore
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_7_1_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_7_1">
<span class="md-nav__icon md-icon"></span>
Component backup & restore
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-backup/" class="md-nav__link">
Backup
</a>
</li>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-restore/" class="md-nav__link">
Restore
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-coldstandby/" class="md-nav__link">
Cold-standby (rolling backup)
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7_3" >
<label class="md-nav__link" for="__nav_7_3" id="__nav_7_3_label" tabindex="0">
Manual backups
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_7_3_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_7_3">
<span class="md-nav__icon md-icon"></span>
Manual backups
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-backup_restore-maildir/" class="md-nav__link">
Maildir
</a>
</li>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-backup_restore-mysql/" class="md-nav__link">
MySQL (mysqldump)
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7_4" >
<label class="md-nav__link" for="__nav_7_4" id="__nav_7_4_label" tabindex="0">
mailcow-internal backups
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_7_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_7_4">
<span class="md-nav__icon md-icon"></span>
mailcow-internal backups
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="backup_restore/b_n_r-accidental_deletion/" class="md-nav__link">
Recover accidentally deleted data
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8" >
<label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0">
Manual/Guides/Examples
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_8_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8">
<span class="md-nav__icon md-icon"></span>
Manual/Guides/Examples
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_1" >
<label class="md-nav__link" for="__nav_8_1" id="__nav_8_1_label" tabindex="0">
mailcow UI
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_1_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_1">
<span class="md-nav__icon md-icon"></span>
mailcow UI
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-bl_wl/" class="md-nav__link">
Blacklist / Whitelist
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-config/" class="md-nav__link">
Configuration
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-css/" class="md-nav__link">
CSS overrides
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-netfilter/" class="md-nav__link">
Netfilter
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-pushover/" class="md-nav__link">
Pushover
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-spamfilter/" class="md-nav__link">
Spamfilter
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-sub_addressing/" class="md-nav__link">
Sub-addressing
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-tags/" class="md-nav__link">
Tags (for Domains and Mailboxes)
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-spamalias/" class="md-nav__link">
Temporary email aliases
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-tfa/" class="md-nav__link">
Two-Factor Authentication
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/mailcow-UI/u_e-mailcow_ui-fido/" class="md-nav__link">
WebAuthn / FIDO2
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_2" >
<label class="md-nav__link" for="__nav_8_2" id="__nav_8_2_label" tabindex="0">
Postfix
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_2_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_2">
<span class="md-nav__icon md-icon"></span>
Postfix
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-trust_networks/" class="md-nav__link">
Add trusted networks
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-custom_transport/" class="md-nav__link">
Custom transport maps
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-extra_cf/" class="md-nav__link">
Customize/Expand main.cf
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-disable_sender_verification/" class="md-nav__link">
Disable Sender Addresses Verification
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-attachment_size/" class="md-nav__link">
Max. message size (attachment size)
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-relayhost/" class="md-nav__link">
Relayhosts
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-pflogsumm/" class="md-nav__link">
Statistics with pflogsumm
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Postfix/u_e-postfix-postscreen_whitelist/" class="md-nav__link">
Whitelist IP in Postscreen
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_3" >
<label class="md-nav__link" for="__nav_8_3" id="__nav_8_3_label" tabindex="0">
Unbound
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_3_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_3">
<span class="md-nav__icon md-icon"></span>
Unbound
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Unbound/u_e-unbound-fwd/" class="md-nav__link">
Using an external DNS service
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_4" >
<label class="md-nav__link" for="__nav_8_4" id="__nav_8_4_label" tabindex="0">
Dovecot
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_4">
<span class="md-nav__icon md-icon"></span>
Dovecot
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-extra_conf/" class="md-nav__link">
Customize/Expand dovecot.conf
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-any_acl/" class="md-nav__link">
Enable "any" ACL settings
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-expunge/" class="md-nav__link">
Expunge a Users mails
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-fts/" class="md-nav__link">
FTS (Solr)
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-idle_interval/" class="md-nav__link">
IMAP IDLE interval
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-mail-crypt/" class="md-nav__link">
Mail crypt
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-more/" class="md-nav__link">
More Examples with DOVEADM
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-vmail-volume/" class="md-nav__link">
Move Maildir (vmail)
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-performance/" class="md-nav__link">
Performance Optimizations
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-public_folder/" class="md-nav__link">
Public folders
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-static_master/" class="md-nav__link">
Static master user
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Dovecot/u_e-dovecot-catchall_vacation/" class="md-nav__link">
Vacation replies for catchall addresses
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_5" >
<label class="md-nav__link" for="__nav_8_5" id="__nav_8_5_label" tabindex="0">
Nginx
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_5_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_5">
<span class="md-nav__icon md-icon"></span>
Nginx
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Nginx/u_e-nginx_webmail-site/" class="md-nav__link">
Create subdomain webmail.example.org
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Nginx/u_e-nginx_custom/" class="md-nav__link">
Custom sites
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_6" >
<label class="md-nav__link" for="__nav_8_6" id="__nav_8_6_label" tabindex="0">
Watchdog
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_6_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_6">
<span class="md-nav__icon md-icon"></span>
Watchdog
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Watchdog/u_e-watchdog-thresholds/" class="md-nav__link">
Thresholds
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="manual-guides/Redis/u_e-redis/" class="md-nav__link">
Redis
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/Rspamd/u_e-rspamd/" class="md-nav__link">
Rspamd
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_9" >
<label class="md-nav__link" for="__nav_8_9" id="__nav_8_9_label" tabindex="0">
ClamAV
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_9_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_9">
<span class="md-nav__icon md-icon"></span>
ClamAV
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/ClamAV/u_e-clamav-whitelist/" class="md-nav__link">
Whitelist
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/ClamAV/u_e-clamav-additional_dbs/" class="md-nav__link">
Additional Databases
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="manual-guides/SOGo/u_e-sogo/" class="md-nav__link">
SOGo
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_11" >
<label class="md-nav__link" for="__nav_8_11" id="__nav_8_11_label" tabindex="0">
Docker
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_11_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_8_11">
<span class="md-nav__icon md-icon"></span>
Docker
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="manual-guides/Docker/u_e-docker-cust_dockerfiles/" class="md-nav__link">
Customize Dockerfiles
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="manual-guides/u_e-why_unbound/" class="md-nav__link">
Why unbound?
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/u_e-autodiscover_config/" class="md-nav__link">
Autodiscover / Autoconfig
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/u_e-80_to_443/" class="md-nav__link">
Redirect HTTP to HTTPS
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/u_e-reeanble-weak-protocols/" class="md-nav__link">
Re-enable TLS 1.0 and TLS 1.1
</a>
</li>
<li class="md-nav__item">
<a href="manual-guides/u_e-update-hooks/" class="md-nav__link">
Run scripts before and after updates
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_9" >
<label class="md-nav__link" for="__nav_9" id="__nav_9_label" tabindex="0">
Client Configuration
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_9_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_9">
<span class="md-nav__icon md-icon"></span>
Client Configuration
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="client/client/" class="md-nav__link">
Overview
</a>
</li>
<li class="md-nav__item">
<a href="client/client-android/" class="md-nav__link">
Android
</a>
</li>
<li class="md-nav__item">
<a href="client/client-apple/" class="md-nav__link">
Apple macOS / iOS
</a>
</li>
<li class="md-nav__item">
<a href="client/client-emclient/" class="md-nav__link">
eM Client
</a>
</li>
<li class="md-nav__item">
<a href="client/client-kontact/" class="md-nav__link">
KDE Kontact
</a>
</li>
<li class="md-nav__item">
<a href="client/client-outlook/" class="md-nav__link">
Microsoft Outlook
</a>
</li>
<li class="md-nav__item">
<a href="client/client-thunderbird/" class="md-nav__link">
Mozilla Thunderbird
</a>
</li>
<li class="md-nav__item">
<a href="client/client-windows/" class="md-nav__link">
Windows Mail
</a>
</li>
<li class="md-nav__item">
<a href="client/client-manual/" class="md-nav__link">
Manual configuration
</a>
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<figure>
<p><img alt="mailcow Logo" src="assets/images/logo.svg" width="150" /></p>
</figure>
<h1 id="mailcow-dockerized-">mailcow: dockerized - <img alt="🐮" class="twemoji" src="https://cdn.jsdelivr.net/gh/jdecked/twemoji@14.1.2/assets/svg/1f42e.svg" title=":cow:" /> + <img alt="🐳" class="twemoji" src="https://cdn.jsdelivr.net/gh/jdecked/twemoji@14.1.2/assets/svg/1f433.svg" title=":whale:" /> = <img alt="💕" class="twemoji" src="https://cdn.jsdelivr.net/gh/jdecked/twemoji@14.1.2/assets/svg/1f495.svg" title=":two_hearts:" /><a class="headerlink" href="#mailcow-dockerized-" title="Permanent link">&para;</a></h1>
<p><strong>The mailserver suite with the 'moo'</strong></p>
<h2 id="what-is-mailcow-dockerized">What is mailcow: dockerized?<a class="headerlink" href="#what-is-mailcow-dockerized" title="Permanent link">&para;</a></h2>
<div class="admonition question">
<p class="admonition-title">Question</p>
<p>Mailcow, MailCow or mailcow? What is the exact name of the project?</p>
<p>Correct: <strong>mailcow</strong>, because mailcow is a registered word mark with a small m <img alt="😁" class="twemoji" src="https://cdn.jsdelivr.net/gh/jdecked/twemoji@14.1.2/assets/svg/1f601.svg" title=":grin:" /></p>
</div>
<p>mailcow: dockerized is an open source groupware/email suite based on docker.</p>
<p>mailcow relies on many well known and long used components, which in combination result in an all around carefree email server.</p>
<p>Each container represents a single application, connected in a bridged network.</p>
<ul>
<li><a href="https://letsencrypt.org/">ACME</a> (Automatic generation of Let's Encrypt certificates)</li>
<li><a href="https://www.clamav.net/">ClamAV</a> (anti-virus scanner) (optional)</li>
<li><a href="https://www.dovecot.org/">Dovecot</a> (IMAP/POP server for retrieving mail)</li>
<li><a href="https://mariadb.org/">MariaDB</a> (database to store user information, etc.)</li>
<li><a href="https://www.memcached.org/">Memcached</a> (cache for the SOGo webmailer)</li>
<li><a href="https://www.netfilter.org/">Netfilter</a> (Fail2ban-like integration of <a href="https://github.com/mkuron">@mkuron</a>)</li>
<li><a href="https://nginx.org/">Nginx</a> (Web server for the mailcow UI)</li>
<li><a href="https://github.com/decalage2/oletools">Oletools</a> via <a href="https://github.com/HeinleinSupport/olefy">Olefy</a> (analyzing office documents for viruses, macros, etc.)</li>
<li><a href="https://php.net/">PHP</a> (programming language for most web-based mailcow actions)</li>
<li><a href="http://www.postfix.org/">Postfix</a> (Receiver/sender for mail traffic on the Internet)</li>
<li><a href="https://redis.io/">Redis</a> (storage for spam information, DKIM keys, etc.)</li>
<li><a href="https://www.rspamd.com/">Rspamd</a> (spam filter with automatic learning of spam mails)</li>
<li><a href="https://sogo.nu/">SOGo</a> (integrated webmailer and cal/carddav interface)</li>
<li><a href="https://solr.apache.org/">Solr</a> (full-text search for IMAP connections for quick email search) (optional)</li>
<li><a href="https://unbound.net/">Unbound</a> (integrated DNS server to check DNSSEC etc.)</li>
<li>A watchdog for basic monitoring of container health inside mailcow</li>
</ul>
<p>But the heart of mailcow is the graphical web interface, the <strong>mailcow UI</strong>.</p>
<p>It offers a place for almost all settings and allows the comfortable creation of new domains and email addresses with just a few clicks.</p>
<p>But also other or more tricky tasks can be done in it with ease:</p>
<ul>
<li><a href="http://dkim.org">DKIM</a> and <a href="http://arc-spec.org/">ARC</a> support/generation.</li>
<li>Black and white lists per domain and per user.</li>
<li>Spam score management per user (reject spam, flag spam, greylist).</li>
<li>Allow mailbox users to create temporary spam aliases</li>
<li>Prepend email tags to subject or move emails to subfolders (per user)</li>
<li>Allow mailbox users to toggle TLS enforcement for inbound and outbound messages</li>
<li>Users can reset caches on SOGo ActiveSync devices</li>
<li>imapsync to periodically migrate or retrieve remote mailboxes</li>
<li>TFA: Yubikey OTP and WebAuthn USB (Google Chrome and derivatives only), TOTP</li>
<li>Add whitelist hosts to forward mail to mailcow</li>
<li>Fail2ban-like integration</li>
<li>Quarantine system</li>
<li>Anti-virus scanning including macro scanning in Office documents</li>
<li>Integrated basic monitoring</li>
<li>And much more...</li>
</ul>
<p>The mailcow data (such as emails, user data, etc.) is stored in <strong>Docker volumes</strong> - take good care of these volumes:</p>
<ul>
<li>clamd-db-vol-1</li>
<li>crypt-vol-1</li>
<li>mysql-socket-vol-1</li>
<li>mysql-vol-1</li>
<li>postfix-vol-1</li>
<li>redis-vol-1</li>
<li>rspamd-vol-1</li>
<li>sogo-userdata-backup-vol-1</li>
<li>sogo-web-vol-1</li>
<li>solr-vol-1</li>
<li>vmail-index-vol-1</li>
<li>vmail-vol-1</li>
</ul>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>The mails are compressed and encrypted. The key pair can be found in crypt-vol-1. Please don't forget to backup this and other volumes. #nobackupnopity</p>
</div>
<hr />
<h2 id="support-the-mailcow-project">Support the mailcow project<a class="headerlink" href="#support-the-mailcow-project" title="Permanent link">&para;</a></h2>
<p>Please consider a support contract for a small monthly fee at <a href="https://www.servercow.de/mailcow?lang=en#support">Servercow</a><sup id="fnref:1"><a class="footnote-ref" href="#fn:1">1</a></sup> to support further development. <em>We</em> support <em>you</em> while <em>you</em> support <em>us</em>. :)</p>
<p>If you are super awesome and would like to support without a contract, you can get a SAL (Stay-Awesome License) that confirms your awesomeness (a flexible one-time payment) at <a href="https://www.servercow.de/mailcow?lang=en#sal">Servercow</a>.</p>
<hr />
<h2 id="need-help">Need help?<a class="headerlink" href="#need-help" title="Permanent link">&para;</a></h2>
<p>There are two ways to achieve support for your mailcow installation.</p>
<h3 id="commercial-support">Commercial support<a class="headerlink" href="#commercial-support" title="Permanent link">&para;</a></h3>
<p>For professional and prioritized commercial support you can sign a basic support subscription at <a href="https://www.servercow.de/mailcow?lang=en#support">Servercow</a>. For custom inquiries or questions please contact us at <a href="mailto:info@servercow.de">info@servercow.de</a> instead.</p>
<p>Furthermore we do also provide a fully featured and managed mailcow <a href="https://www.servercow.de/mailcow?lang=en#managed">here</a>. This way we take care about the technical magic underneath and you can enjoy your whole mail experience in a hassle-free way.</p>
<h3 id="community-support-and-chat">Community support and chat<a class="headerlink" href="#community-support-and-chat" title="Permanent link">&para;</a></h3>
<p>The other alternative is our free community-support on our various channels below. Please notice, that this support is driven by our awesome community around mailcow. This kind of support is best-effort, voluntary and there is no guarantee for anything.</p>
<ul>
<li>
<p>Our mailcow community @ <a href="https://community.mailcow.email">community.mailcow.email</a></p>
</li>
<li>
<p>Telegram (Support) @ <a href="https://t.me/mailcow">t.me/mailcow</a>.</p>
</li>
<li>
<p>Telegram (Off-Topic) @ <a href="https://t.me/mailcowOfftopic">t.me/mailcowOfftopic</a>.</p>
</li>
<li>
<p>Twitter <a href="https://twitter.com/mailcow_email">@mailcow_email</a></p>
</li>
</ul>
<p>Telegram desktop clients are available for <a href="https://desktop.telegram.org">multiple platforms</a>. You can search the groups history for keywords.</p>
<p>For <strong>bug tracking, feature requests and code contributions</strong> only:</p>
<ul>
<li>GitHub @ <a href="https://github.com/mailcow/mailcow-dockerized">mailcow/mailcow-dockerized</a></li>
</ul>
<hr />
<h2 id="interested-try-it-out-right-away">Interested? Try it out right away!<a class="headerlink" href="#interested-try-it-out-right-away" title="Permanent link">&para;</a></h2>
<p>Have we got your interest? Get a first overview of the functionalities of mailcow and your mailcow UI in our official <strong>mailcow demos</strong>!</p>
<p>Since September 2022 we´re providing two seperate Demo instances: </p>
<ul>
<li><strong><a href="https://demo.mailcow.email">demo.mailcow.email</a></strong> is the classic Demo based on the <strong>stable releases</strong>.</li>
<li><strong><a href="https://nightly-demo.mailcow.email">nightly-demo.mailcow.email</a></strong> is the new <strong>nightly demo</strong> based on unreleased testing features. (So especially interesting for those who have no possibility to create a test instance themselves.)</li>
</ul>
<div class="admonition abstract">
<p class="admonition-title">Use these credentials for the demos</p>
<ul>
<li><strong>Administrator</strong>: admin / moohoo</li>
<li><strong>Domain-Administrator</strong>: department / moohoo</li>
<li><strong>Mailbox</strong>: <a href="&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#100;&#101;&#109;&#111;&#64;&#52;&#52;&#48;&#48;&#52;&#52;&#46;&#120;&#121;&#122;">&#100;&#101;&#109;&#111;&#64;&#52;&#52;&#48;&#48;&#52;&#52;&#46;&#120;&#121;&#122;</a> / moohoo</li>
</ul>
<p><em>The login credentials work for both variants</em>.</p>
</div>
<div class="admonition success">
<p class="admonition-title">Always up to date</p>
<p>The demo instances get the latest updates directly after releases from GitHub. Fully automatic, without any downtime!</p>
</div>
<div class="footnote">
<hr />
<ol>
<li id="fn:1">
<p>Servercow is a hosting/support division of The Infrastructure Company GmbH (mailcow maintainer).&#160;<a class="footnote-backref" href="#fnref:1" title="Jump back to footnote 1 in the text">&#8617;</a></p>
</li>
</ol>
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