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<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.) using Docker.">
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<meta name="author" content="docker-mailserver (Github Organization)">
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docker-mailserver
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Introduction
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Configuration
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<span class="icon-external-link"></span>GHCR
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Docker Mailserver
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|
|
|
|
<span class="md-ellipsis">
|
|
Modifications via Script
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
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</ul>
|
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</nav>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/auth-ldap/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
LDAP Authentication
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/auth-oauth2/" class="md-nav__link">
|
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|
|
|
<span class="md-ellipsis">
|
|
OAuth2 Authentication
|
|
</span>
|
|
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|
|
|
</a>
|
|
</li>
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-sieve/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Email Filtering with Sieve
|
|
</span>
|
|
|
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|
|
</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-fetchmail/" class="md-nav__link">
|
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|
|
|
|
<span class="md-ellipsis">
|
|
Email Gathering with Fetchmail
|
|
</span>
|
|
|
|
|
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</a>
|
|
</li>
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-getmail/" class="md-nav__link">
|
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|
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|
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<span class="md-ellipsis">
|
|
Email Gathering with Getmail
|
|
</span>
|
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|
|
|
|
</a>
|
|
</li>
|
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<li class="md-nav__item md-nav__item--nested">
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|
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<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_8_9" >
|
|
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|
|
<label class="md-nav__link" for="__nav_4_8_9" id="__nav_4_8_9_label" tabindex="0">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Email Forwarding
|
|
</span>
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="3" aria-labelledby="__nav_4_8_9_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_4_8_9">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Email Forwarding
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-forwarding/relay-hosts/" class="md-nav__link">
|
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|
|
|
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<span class="md-ellipsis">
|
|
Relay Hosts
|
|
</span>
|
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|
|
|
|
</a>
|
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</li>
|
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|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-forwarding/aws-ses/" class="md-nav__link">
|
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|
|
|
|
<span class="md-ellipsis">
|
|
AWS SES
|
|
</span>
|
|
|
|
|
|
</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/mail-forwarding/gmail-smtp/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Configure Gmail as a relay host
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
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|
|
|
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</ul>
|
|
</nav>
|
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</li>
|
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|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/full-text-search/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Full-Text Search
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
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|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/kubernetes/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Kubernetes
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/ipv6/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
IPv6
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
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<li class="md-nav__item">
|
|
<a href="../../../config/advanced/podman/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Podman
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
|
|
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|
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|
<li class="md-nav__item">
|
|
<a href="../../../config/advanced/dovecot-master-accounts/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Dovecot Master Accounts
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
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|
|
<li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5" checked>
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Examples
|
|
</span>
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="true">
|
|
<label class="md-nav__title" for="__nav_5">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Examples
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
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|
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<li class="md-nav__item md-nav__item--active md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5_1" checked>
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_5_1" id="__nav_5_1_label" tabindex="0">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Tutorials
|
|
</span>
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_5_1_label" aria-expanded="true">
|
|
<label class="md-nav__title" for="__nav_5_1">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Tutorials
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
<li class="md-nav__item md-nav__item--active">
|
|
|
|
<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
|
|
|
|
|
|
|
|
<label class="md-nav__link md-nav__link--active" for="__toc">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Basic Installation
|
|
</span>
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<a href="./" class="md-nav__link md-nav__link--active">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Basic Installation
|
|
</span>
|
|
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__title" for="__toc">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Table of contents
|
|
</label>
|
|
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#a-basic-example-with-relevant-environmental-variables" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
A Basic Example With Relevant Environmental Variables
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#a-basic-ldap-setup" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
A Basic LDAP Setup
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#using-dms-as-a-local-mail-relay-for-containers" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
Using DMS as a local mail relay for containers
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
|
|
|
</li>
|
|
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|
|
|
|
|
|
|
|
|
|
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|
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|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../mailserver-behind-proxy/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Mailserver behind Proxy
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../crowdsec/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Crowdsec
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../docker-build/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Building your own Docker image
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../blog-posts/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Blog Posts
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
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|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_5_2" >
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_5_2" id="__nav_5_2_label" tabindex="0">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Use Cases
|
|
</span>
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_5_2_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_5_2">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Use Cases
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/forward-only-mailserver-with-ldap-authentication/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Forward-Only Mail-Server with LDAP
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/imap-folders/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Customize IMAP Folders
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/ios-mail-push-support/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
iOS Mail Push Support
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/auth-lua/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Lua Authentication
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
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|
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|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/bind-smtp-network-interface/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Bind outbound SMTP to a specific network
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
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|
|
|
|
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|
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|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../use-cases/external-relay-only-mailserver/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
Relay inbound and outbound mail for an internal DMS
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../../faq/" class="md-nav__link">
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
FAQ
|
|
</span>
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
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Using DMS as a local mail relay for containers
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<h1>Basic Installation</h1>
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<h2 id="a-basic-example-with-relevant-environmental-variables"><a class="toclink" href="#a-basic-example-with-relevant-environmental-variables">A Basic Example With Relevant Environmental Variables</a></h2>
|
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<p>This example provides you only with a basic example of what a minimal setup could look like. We <strong>strongly recommend</strong> that you go through the configuration file yourself and adjust everything to your needs. The default <a href="https://github.com/docker-mailserver/docker-mailserver/blob/master/compose.yaml">compose.yaml</a> can be used for the purpose out-of-the-box, see the <a href="../../../usage/"><em>Usage</em> chapter</a>.</p>
|
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<div class="highlight"><pre><span></span><code><span class="nt">services</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">mailserver</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ghcr.io/docker-mailserver/docker-mailserver:latest</span>
|
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<span class="w"> </span><span class="nt">container_name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mailserver</span>
|
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<span class="w"> </span><span class="c1"># Provide the FQDN of your mail server here (Your DNS MX record should point to this value)</span>
|
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<span class="w"> </span><span class="nt">hostname</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mail.example.com</span>
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<span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"25:25"</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"465:465"</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"587:587"</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"993:993"</span>
|
|
<span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-data/:/var/mail/</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-state/:/var/mail-state/</span>
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-logs/:/var/log/mail/</span>
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/config/:/tmp/docker-mailserver/</span>
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/localtime:/etc/localtime:ro</span>
|
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<span class="w"> </span><span class="nt">environment</span><span class="p">:</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ENABLE_RSPAMD=1</span>
|
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ENABLE_CLAMAV=1</span>
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<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ENABLE_FAIL2BAN=1</span>
|
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<span class="w"> </span><span class="nt">cap_add</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">NET_ADMIN</span><span class="w"> </span><span class="c1"># For Fail2Ban to work</span>
|
|
<span class="w"> </span><span class="nt">restart</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">always</span>
|
|
</code></pre></div>
|
|
<h2 id="a-basic-ldap-setup"><a class="toclink" href="#a-basic-ldap-setup">A Basic LDAP Setup</a></h2>
|
|
<p><strong>Note</strong> There are currently no LDAP maintainers. If you encounter issues, please raise them in the issue tracker, but be aware that the core maintainers team will most likely not be able to help you. <strong>We would appreciate and we encourage everyone to actively participate in maintaining LDAP-related code by becoming a maintainer!</strong></p>
|
|
<div class="highlight"><pre><span></span><code><span class="nt">services</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">mailserver</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ghcr.io/docker-mailserver/docker-mailserver:latest</span>
|
|
<span class="w"> </span><span class="nt">container_name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mailserver</span>
|
|
<span class="w"> </span><span class="c1"># Provide the FQDN of your mail server here (Your DNS MX record should point to this value)</span>
|
|
<span class="w"> </span><span class="nt">hostname</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mail.example.com</span>
|
|
<span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"25:25"</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"465:465"</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"587:587"</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"993:993"</span>
|
|
<span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-data/:/var/mail/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-state/:/var/mail-state/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-logs/:/var/log/mail/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/config/:/tmp/docker-mailserver/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/localtime:/etc/localtime:ro</span>
|
|
<span class="w"> </span><span class="nt">environment</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ACCOUNT_PROVISIONER=LDAP</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_SERVER_HOST=ldap</span><span class="w"> </span><span class="c1"># your ldap container/IP/ServerName</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_SEARCH_BASE=ou=people,dc=localhost,dc=localdomain</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_BIND_DN=cn=admin,dc=localhost,dc=localdomain</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_BIND_PW=admin</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_QUERY_FILTER_USER=(&(mail=%s)(mailEnabled=TRUE))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_QUERY_FILTER_GROUP=(&(mailGroupMember=%s)(mailEnabled=TRUE))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_QUERY_FILTER_ALIAS=(|(&(mailAlias=%s)(objectClass=PostfixBookMailForward))(&(mailAlias=%s)(objectClass=PostfixBookMailAccount)(mailEnabled=TRUE)))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LDAP_QUERY_FILTER_DOMAIN=(|(&(mail=*@%s)(objectClass=PostfixBookMailAccount)(mailEnabled=TRUE))(&(mailGroupMember=*@%s)(objectClass=PostfixBookMailAccount)(mailEnabled=TRUE))(&(mailalias=*@%s)(objectClass=PostfixBookMailForward)))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">DOVECOT_PASS_FILTER=(&(objectClass=PostfixBookMailAccount)(uniqueIdentifier=%n))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">DOVECOT_USER_FILTER=(&(objectClass=PostfixBookMailAccount)(uniqueIdentifier=%n))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ENABLE_SASLAUTHD=1</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_MECHANISMS=ldap</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_LDAP_SERVER=ldap</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_LDAP_BIND_DN=cn=admin,dc=localhost,dc=localdomain</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_LDAP_PASSWORD=admin</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_LDAP_SEARCH_BASE=ou=people,dc=localhost,dc=localdomain</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SASLAUTHD_LDAP_FILTER=(&(objectClass=PostfixBookMailAccount)(uniqueIdentifier=%U))</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">POSTMASTER_ADDRESS=postmaster@localhost.localdomain</span>
|
|
<span class="w"> </span><span class="nt">restart</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">always</span>
|
|
</code></pre></div>
|
|
<h2 id="using-dms-as-a-local-mail-relay-for-containers"><a class="toclink" href="#using-dms-as-a-local-mail-relay-for-containers">Using DMS as a local mail relay for containers</a></h2>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">Info</p>
|
|
<p>This was originally a community contributed guide. Please let us know via a Github Issue if you're having any difficulty following the guide so that we can update it.</p>
|
|
</div>
|
|
<p>This guide is focused on only using <a href="../../../config/security/understanding-the-ports/">SMTP ports (not POP3 and IMAP)</a> with the intent to relay mail received from another service to an external email address (eg: <code>user@gmail.com</code>). It is not intended for mailbox storage of real users.</p>
|
|
<p>In this setup DMS is not intended to receive email from the outside world, so no anti-spam or anti-virus software is needed, making the service lighter to run.</p>
|
|
<div class="admonition tip">
|
|
<p class="admonition-title"><code>setup</code></p>
|
|
<p>The <code>setup</code> command used below is to be <a href="../../../usage/#get-up-and-running">run inside the container</a>.</p>
|
|
</div>
|
|
<div class="admonition warning">
|
|
<p class="admonition-title">Open Relays</p>
|
|
<p>Adding the docker network's gateway to the list of trusted hosts (<em>eg: using the <code>network</code> or <code>connected-networks</code> option</em>), can create an <a href="https://en.wikipedia.org/wiki/Open_mail_relay"><strong>open relay</strong></a>. For instance <a href="https://github.com/docker-mailserver/docker-mailserver/issues/1405#issuecomment-590106498">if IPv6 is enabled on the host machine, but not in Docker</a>.</p>
|
|
</div>
|
|
<ol>
|
|
<li>
|
|
<p>Create the file <code>compose.yaml</code> with a content like this:</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code><span class="nt">services</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">mailserver</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ghcr.io/docker-mailserver/docker-mailserver:latest</span>
|
|
<span class="w"> </span><span class="nt">container_name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mailserver</span>
|
|
<span class="w"> </span><span class="c1"># Provide the FQDN of your mail server here (Your DNS MX record should point to this value)</span>
|
|
<span class="w"> </span><span class="nt">hostname</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mail.example.com</span>
|
|
<span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"25:25"</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"587:587"</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">"465:465"</span>
|
|
<span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-data/:/var/mail/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-state/:/var/mail-state/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/mail-logs/:/var/log/mail/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/config/:/tmp/docker-mailserver/</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/localtime:/etc/localtime:ro</span>
|
|
<span class="w"> </span><span class="nt">environment</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ENABLE_FAIL2BAN=1</span>
|
|
<span class="w"> </span><span class="c1"># Using letsencrypt for SSL/TLS certificates:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SSL_TYPE=letsencrypt</span>
|
|
<span class="w"> </span><span class="c1"># Allow sending emails from other docker containers:</span>
|
|
<span class="w"> </span><span class="c1"># Beware creating an Open Relay: https://docker-mailserver.github.io/docker-mailserver/latest/config/environment/#permit_docker</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">PERMIT_DOCKER=network</span>
|
|
<span class="w"> </span><span class="c1"># You may want to enable this: https://docker-mailserver.github.io/docker-mailserver/latest/config/environment/#spoof_protection</span>
|
|
<span class="w"> </span><span class="c1"># See step 6 below, which demonstrates setup with enabled/disabled SPOOF_PROTECTION:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">SPOOF_PROTECTION=0</span>
|
|
<span class="w"> </span><span class="nt">cap_add</span><span class="p">:</span>
|
|
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">NET_ADMIN</span><span class="w"> </span><span class="c1"># For Fail2Ban to work</span>
|
|
<span class="w"> </span><span class="nt">restart</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">always</span>
|
|
</code></pre></div>
|
|
</div>
|
|
<p>The docs have a detailed page on <a href="../../../config/environment/">Environment Variables</a> for reference.</p>
|
|
<details class="tip">
|
|
<summary>Firewalled ports</summary>
|
|
<p>If you have a firewall running, you may need to open ports <code>25</code>, <code>587</code> and <code>465</code>.</p>
|
|
<p>For example, with the firewall <code>ufw</code>, run:</p>
|
|
<div class="highlight"><pre><span></span><code>ufw<span class="w"> </span>allow<span class="w"> </span><span class="m">25</span>
|
|
ufw<span class="w"> </span>allow<span class="w"> </span><span class="m">587</span>
|
|
ufw<span class="w"> </span>allow<span class="w"> </span><span class="m">465</span>
|
|
</code></pre></div>
|
|
<p><strong>Caution:</strong> This may <a href="https://github.com/docker-mailserver/docker-mailserver/issues/3151">not be sound advice</a>.</p>
|
|
</details>
|
|
</li>
|
|
<li>
|
|
<p>Configure your DNS service to use an MX record for the <em>hostname</em> (eg: <code>mail</code>) you configured in the previous step and add the <a href="../../../config/best-practices/dkim_dmarc_spf/#spf">SPF</a> TXT record.</p>
|
|
<div class="admonition tip">
|
|
<p class="admonition-title">If you manually manage the DNS zone file for the domain</p>
|
|
<p>It would look something like this:</p>
|
|
<div class="highlight"><pre><span></span><code>$ORIGIN example.com
|
|
@ IN A 10.11.12.13
|
|
mail IN A 10.11.12.13
|
|
|
|
; mail server for example.com
|
|
@ IN MX 10 mail.example.com.
|
|
|
|
; Add SPF record
|
|
@ IN TXT "v=spf1 mx -all"
|
|
</code></pre></div>
|
|
<p>Then don't forget to change the <code>SOA</code> serial number, and to restart the service.</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p><a href="../../../config/best-practices/dkim_dmarc_spf/#dkim">Generate DKIM keys</a> for your domain via <code>setup config dkim</code>.</p>
|
|
<p>Copy the content of the file <code>docker-data/dms/config/opendkim/keys/example.com/mail.txt</code> and add it to your DNS records as a TXT like SPF was handled above.</p>
|
|
<p>I use <a href="https://github.com/docker-scripts/bind9">bind9</a> for managing my domains, so I just paste it on <code>example.com.db</code>:</p>
|
|
<div class="highlight"><pre><span></span><code>mail._domainkey IN TXT ( "v=DKIM1; h=sha256; k=rsa; "
|
|
"p=MIIBIjANBgkqhkiG9w0BAQEFACAQ8AMIIBCgKCAQEAaH5KuPYPSF3Ppkt466BDMAFGOA4mgqn4oPjZ5BbFlYA9l5jU3bgzRj3l6/Q1n5a9lQs5fNZ7A/HtY0aMvs3nGE4oi+LTejt1jblMhV/OfJyRCunQBIGp0s8G9kIUBzyKJpDayk2+KJSJt/lxL9Iiy0DE5hIv62ZPP6AaTdHBAsJosLFeAzuLFHQ6USyQRojefqFQtgYqWQ2JiZQ3"
|
|
"iqq3bD/BVlwKRp5gH6TEYEmx8EBJUuDxrJhkWRUk2VDl1fqhVBy8A9O7Ah+85nMrlOHIFsTaYo9o6+cDJ6t1i6G1gu+bZD0d3/3bqGLPBQV9LyEL1Rona5V7TJBGg099NQkTz1IwIDAQAB" ) ; ----- DKIM key mail for example.com
|
|
</code></pre></div>
|
|
</li>
|
|
<li>
|
|
<p>Get an SSL certificate, <a href="../../../config/security/ssl/#lets-encrypt-recommended">we have a guide for you here</a> (<em>Let's Encrypt</em> is a popular service to get free SSL certificates).</p>
|
|
</li>
|
|
<li>
|
|
<p>Start DMS and check the terminal output for any errors: <code>docker compose up</code>.</p>
|
|
</li>
|
|
<li>
|
|
<p>Create email accounts and aliases:</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">With <code>SPOOF_PROTECTION=0</code></p>
|
|
<div class="highlight"><pre><span></span><code>setup<span class="w"> </span>email<span class="w"> </span>add<span class="w"> </span>admin@example.com<span class="w"> </span>passwd123
|
|
setup<span class="w"> </span>email<span class="w"> </span>add<span class="w"> </span>info@example.com<span class="w"> </span>passwd123
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>admin@example.com<span class="w"> </span>external-account@gmail.com
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>info@example.com<span class="w"> </span>external-account@gmail.com
|
|
setup<span class="w"> </span>email<span class="w"> </span>list
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>list
|
|
</code></pre></div>
|
|
<p>Aliases make sure that any email that comes to these accounts is forwarded to your third-party email address (<code>external-account@gmail.com</code>), where they are retrieved (<em>eg: via third-party web or mobile app</em>), instead of connecting directly to <code>docker-mailserer</code> with POP3 / IMAP.</p>
|
|
</div>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">With <code>SPOOF_PROTECTION=1</code></p>
|
|
<div class="highlight"><pre><span></span><code>setup<span class="w"> </span>email<span class="w"> </span>add<span class="w"> </span>admin.gmail@example.com<span class="w"> </span>passwd123
|
|
setup<span class="w"> </span>email<span class="w"> </span>add<span class="w"> </span>info.gmail@example.com<span class="w"> </span>passwd123
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>admin@example.com<span class="w"> </span>admin.gmail@example.com
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>info@example.com<span class="w"> </span>info.gmail@example.com
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>admin.gmail@example.com<span class="w"> </span>external-account@gmail.com
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>info.gmail@example.com<span class="w"> </span>external-account@gmail.com
|
|
setup<span class="w"> </span>email<span class="w"> </span>list
|
|
setup<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>list
|
|
</code></pre></div>
|
|
<p>This extra step is required to avoid the <code>553 5.7.1 Sender address rejected: not owned by user</code> error (<em>the accounts used for submitting mail to Gmail are <code>admin.gmail@example.com</code> and <code>info.gmail@example.com</code></em>)</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>Send some test emails to these addresses and make other tests. Once everything is working well, stop the container with <code>ctrl+c</code> and start it again as a daemon: <code>docker compose up -d</code>.</p>
|
|
</li>
|
|
</ol>
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