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edge/examples/use-cases/forward-only-mailserver-with-ldap-authentication/index.html
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@ -14,8 +14,14 @@
<link rel="canonical" href="https://docker-mailserver.github.io/docker-mailserver/edge/examples/use-cases/forward-only-mailserver-with-ldap-authentication/">
<link rel="prev" href="../../tutorials/blog-posts/">
<link rel="next" href="../imap-folders/">
<link rel="icon" href="../../../assets/logo/favicon-32x32.png">
<meta name="generator" content="mkdocs-1.3.0, mkdocs-material-8.3.9">
<meta name="generator" content="mkdocs-1.4.2, mkdocs-material-9.1.5">
@ -23,13 +29,13 @@
<link rel="stylesheet" href="../../../assets/stylesheets/main.1d29e8d0.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/main.7a7fce14.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/palette.cbb835fc.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/palette.a0c5b2b5.min.css">
@ -44,12 +50,13 @@
<link rel="stylesheet" href="../../../assets/css/customizations.css">
<script>__md_scope=new URL("../../..",location),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script>
<script>__md_scope=new URL("../../..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script>
</head>
@ -81,10 +88,8 @@
</div>
<div data-md-component="outdated" hidden>
<aside class="md-banner md-banner--warning">
</aside>
<div data-md-color-scheme="default" data-md-component="outdated" hidden>
</div>
@ -120,7 +125,6 @@
<form class="md-header__option" data-md-component="palette">
<input class="md-option" data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme="default" data-md-color-primary="indigo" data-md-color-accent="indigo" aria-label="Switch to dark mode" type="radio" name="__palette" id="__palette_1">
<label class="md-header__button md-icon" title="Switch to dark mode" for="__palette_2" hidden>
@ -129,7 +133,6 @@
<input class="md-option" data-md-color-media="(prefers-color-scheme: dark)" data-md-color-scheme="slate" data-md-color-primary="indigo" data-md-color-accent="blue" aria-label="Switch to light mode" type="radio" name="__palette" id="__palette_2">
<label class="md-header__button md-icon" title="Switch to light mode" for="__palette_1" hidden>
@ -155,7 +158,7 @@
</label>
<nav class="md-search__options" aria-label="Search">
<button type="reset" class="md-search__icon md-icon" aria-label="Clear" tabindex="-1">
<button type="reset" class="md-search__icon md-icon" title="Clear" aria-label="Clear" tabindex="-1">
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</button>
</nav>
@ -167,7 +170,7 @@
<div class="md-search-result__meta">
Initializing search
</div>
<ol class="md-search-result__list"></ol>
<ol class="md-search-result__list" role="presentation"></ol>
</div>
</div>
</div>
@ -179,7 +182,7 @@
<a href="https://github.com/docker-mailserver/docker-mailserver" title="Go to repository" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><!--! Font Awesome Free 6.1.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2022 Fonticons, Inc.--><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
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</div>
<div class="md-source__repository">
docker-mailserver
@ -198,7 +201,7 @@
<nav class="md-tabs" aria-label="Tabs" data-md-component="tabs">
<div class="md-tabs__inner md-grid">
<div class="md-grid">
<ul class="md-tabs__list">
@ -363,7 +366,7 @@
<a href="https://github.com/docker-mailserver/docker-mailserver" title="Go to repository" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><!--! Font Awesome Free 6.1.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2022 Fonticons, Inc.--><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
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<div class="md-source__repository">
docker-mailserver
@ -429,17 +432,20 @@
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" data-md-toggle="__nav_4" type="checkbox" id="__nav_4" checked>
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<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
Configuration
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Configuration" data-md-level="1">
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4">
<span class="md-nav__icon md-icon"></span>
Configuration
@ -465,36 +471,25 @@
<li class="md-nav__item">
<a href="../../../config/setup.sh/" class="md-nav__link">
Your Best Friend setup.sh
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" data-md-toggle="__nav_4_3" type="checkbox" id="__nav_4_3" checked>
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_2" >
<label class="md-nav__link" for="__nav_4_3">
<label class="md-nav__link" for="__nav_4_2" id="__nav_4_2_label" tabindex="0">
User Management
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="User Management" data-md-level="2">
<label class="md-nav__title" for="__nav_4_3">
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<label class="md-nav__title" for="__nav_4_2">
<span class="md-nav__icon md-icon"></span>
User Management
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@ -544,18 +539,21 @@
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" data-md-toggle="__nav_4_4" type="checkbox" id="__nav_4_4" checked>
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_3" >
<label class="md-nav__link" for="__nav_4_4">
<label class="md-nav__link" for="__nav_4_3" id="__nav_4_3_label" tabindex="0">
Best Practices
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<nav class="md-nav" aria-label="Best Practices" data-md-level="2">
<label class="md-nav__title" for="__nav_4_4">
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_3_label" aria-expanded="false">
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<span class="md-nav__icon md-icon"></span>
Best Practices
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@ -633,18 +631,21 @@
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<label class="md-nav__link" for="__nav_4_4" id="__nav_4_4_label" tabindex="0">
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<span class="md-nav__icon md-icon"></span>
Security
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<label class="md-nav__link" for="__nav_4_6">
Troubleshooting
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<nav class="md-nav" aria-label="Troubleshooting" data-md-level="2">
<label class="md-nav__title" for="__nav_4_6">
<span class="md-nav__icon md-icon"></span>
Troubleshooting
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<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/troubleshooting/debugging/" class="md-nav__link">
<a href="../../../config/debugging/" class="md-nav__link">
Debugging
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@ -793,21 +761,38 @@
<li class="md-nav__item">
<a href="../../../config/setup.sh/" class="md-nav__link">
Your Friend setup.sh
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@ -884,17 +872,20 @@
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@ -1001,17 +992,20 @@
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@ -1149,17 +1143,18 @@
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@ -1175,17 +1170,20 @@
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@ -1266,17 +1264,18 @@
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@ -1535,14 +1537,14 @@
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<h1>Forward-Only Mail-Server with LDAP</h1>
@ -1550,76 +1552,76 @@
<h2 id="building-a-forward-only-mail-server"><a class="toclink" href="#building-a-forward-only-mail-server">Building a Forward-Only Mail-Server</a></h2>
<p>A <strong>forward-only</strong> mail-server does not have any local mailboxes. Instead, it has only aliases that forward emails to external email accounts (for example to a Gmail account). You can also send email from the localhost (the computer where <code>docker-mailserver</code> is installed), using as sender any of the alias addresses.</p>
<p>The important settings for this setup (on <code>mailserver.env</code>) are these:</p>
<div class="highlight"><pre><span></span><code><span class="na">PERMIT_DOCKER</span><span class="o">=</span><span class="s">host</span><span class="w"></span>
<span class="na">ENABLE_POP3</span><span class="o">=</span><span class="w"></span>
<span class="na">ENABLE_CLAMAV</span><span class="o">=</span><span class="s">0</span><span class="w"></span>
<span class="na">SMTP_ONLY</span><span class="o">=</span><span class="s">1</span><span class="w"></span>
<span class="na">ENABLE_SPAMASSASSIN</span><span class="o">=</span><span class="s">0</span><span class="w"></span>
<span class="na">ENABLE_FETCHMAIL</span><span class="o">=</span><span class="s">0</span><span class="w"></span>
<div class="highlight"><pre><span></span><code><span class="na">PERMIT_DOCKER</span><span class="o">=</span><span class="s">host</span>
<span class="na">ENABLE_POP3</span><span class="o">=</span>
<span class="na">ENABLE_CLAMAV</span><span class="o">=</span><span class="s">0</span>
<span class="na">SMTP_ONLY</span><span class="o">=</span><span class="s">1</span>
<span class="na">ENABLE_SPAMASSASSIN</span><span class="o">=</span><span class="s">0</span>
<span class="na">ENABLE_FETCHMAIL</span><span class="o">=</span><span class="s">0</span>
</code></pre></div>
<p>Since there are no local mailboxes, we use <code>SMTP_ONLY=1</code> to disable <code>dovecot</code>. We disable as well the other services that are related to local mailboxes (<code>POP3</code>, <code>ClamAV</code>, <code>SpamAssassin</code>, etc.)</p>
<p>We can create aliases with <code>./setup.sh</code>, like this:</p>
<div class="highlight"><pre><span></span><code>./setup.sh <span class="nb">alias</span> add &lt;alias-address&gt; &lt;external-email-account&gt;
<div class="highlight"><pre><span></span><code>./setup.sh<span class="w"> </span><span class="nb">alias</span><span class="w"> </span>add<span class="w"> </span>&lt;alias-address&gt;<span class="w"> </span>&lt;external-email-account&gt;
</code></pre></div>
<h2 id="authenticating-with-ldap"><a class="toclink" href="#authenticating-with-ldap">Authenticating with LDAP</a></h2>
<p>If you want to send emails from outside the mail-server you have to authenticate somehow (with a username and password). One way of doing it is described in <a href="https://github.com/docker-mailserver/docker-mailserver/issues/1247">this discussion</a>. However if there are many user accounts, it is better to use authentication with LDAP. The settings for this on <code>mailserver.env</code> are:</p>
<div class="highlight"><pre><span></span><code><span class="na">ENABLE_LDAP</span><span class="o">=</span><span class="s">1 # with the :edge tag, use ACCOUNT_PROVISIONER</span><span class="w"></span>
<span class="na">ACCOUNT_PROVISIONER</span><span class="o">=</span><span class="s">LDAP</span><span class="w"></span>
<span class="na">LDAP_START_TLS</span><span class="o">=</span><span class="s">yes</span><span class="w"></span>
<span class="na">LDAP_SERVER_HOST</span><span class="o">=</span><span class="s">ldap.example.org</span><span class="w"></span>
<span class="na">LDAP_SEARCH_BASE</span><span class="o">=</span><span class="s">ou=users,dc=example,dc=org</span><span class="w"></span>
<span class="na">LDAP_BIND_DN</span><span class="o">=</span><span class="s">cn=mailserver,dc=example,dc=org</span><span class="w"></span>
<span class="na">LDAP_BIND_PW</span><span class="o">=</span><span class="s">pass1234</span><span class="w"></span>
<div class="highlight"><pre><span></span><code><span class="na">ENABLE_LDAP</span><span class="o">=</span><span class="s">1 # with the :edge tag, use ACCOUNT_PROVISIONER</span>
<span class="na">ACCOUNT_PROVISIONER</span><span class="o">=</span><span class="s">LDAP</span>
<span class="na">LDAP_START_TLS</span><span class="o">=</span><span class="s">yes</span>
<span class="na">LDAP_SERVER_HOST</span><span class="o">=</span><span class="s">ldap.example.org</span>
<span class="na">LDAP_SEARCH_BASE</span><span class="o">=</span><span class="s">ou=users,dc=example,dc=org</span>
<span class="na">LDAP_BIND_DN</span><span class="o">=</span><span class="s">cn=mailserver,dc=example,dc=org</span>
<span class="na">LDAP_BIND_PW</span><span class="o">=</span><span class="s">pass1234</span>
<span class="na">ENABLE_SASLAUTHD</span><span class="o">=</span><span class="s">1</span><span class="w"></span>
<span class="na">SASLAUTHD_MECHANISMS</span><span class="o">=</span><span class="s">ldap</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_SERVER</span><span class="o">=</span><span class="s">ldap.example.org</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_START_TLS</span><span class="o">=</span><span class="s">yes</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_BIND_DN</span><span class="o">=</span><span class="s">cn=mailserver,dc=example,dc=org</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_PASSWORD</span><span class="o">=</span><span class="s">pass1234</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_SEARCH_BASE</span><span class="o">=</span><span class="s">ou=users,dc=example,dc=org</span><span class="w"></span>
<span class="na">SASLAUTHD_LDAP_FILTER</span><span class="o">=</span><span class="s">(&amp;(uid=%U)(objectClass=inetOrgPerson))</span><span class="w"></span>
<span class="na">ENABLE_SASLAUTHD</span><span class="o">=</span><span class="s">1</span>
<span class="na">SASLAUTHD_MECHANISMS</span><span class="o">=</span><span class="s">ldap</span>
<span class="na">SASLAUTHD_LDAP_SERVER</span><span class="o">=</span><span class="s">ldap.example.org</span>
<span class="na">SASLAUTHD_LDAP_START_TLS</span><span class="o">=</span><span class="s">yes</span>
<span class="na">SASLAUTHD_LDAP_BIND_DN</span><span class="o">=</span><span class="s">cn=mailserver,dc=example,dc=org</span>
<span class="na">SASLAUTHD_LDAP_PASSWORD</span><span class="o">=</span><span class="s">pass1234</span>
<span class="na">SASLAUTHD_LDAP_SEARCH_BASE</span><span class="o">=</span><span class="s">ou=users,dc=example,dc=org</span>
<span class="na">SASLAUTHD_LDAP_FILTER</span><span class="o">=</span><span class="s">(&amp;(uid=%U)(objectClass=inetOrgPerson))</span>
</code></pre></div>
<p>My LDAP data structure is very basic, containing only the username, password, and the external email address where to forward emails for this user. An entry looks like this:</p>
<div class="highlight"><pre><span></span><code><span class="na">add uid</span><span class="o">=</span><span class="s">username,ou=users,dc=example,dc=org</span><span class="w"></span>
<span class="na">uid</span><span class="o">:</span><span class="w"> </span><span class="s">username</span><span class="w"></span>
<span class="na">objectClass</span><span class="o">:</span><span class="w"> </span><span class="s">inetOrgPerson</span><span class="w"></span>
<span class="na">sn</span><span class="o">:</span><span class="w"> </span><span class="s">username</span><span class="w"></span>
<span class="na">cn</span><span class="o">:</span><span class="w"> </span><span class="s">username</span><span class="w"></span>
<span class="na">userPassword</span><span class="o">:</span><span class="w"> </span><span class="s">{SSHA}abcdefghi123456789</span><span class="w"></span>
<span class="na">email</span><span class="o">:</span><span class="w"> </span><span class="s">external-account@gmail.com</span><span class="w"></span>
<div class="highlight"><pre><span></span><code><span class="na">add</span><span class="w"> </span><span class="s">uid=username,ou=users,dc=example,dc=org</span>
<span class="na">uid</span><span class="o">:</span><span class="w"> </span><span class="s">username</span>
<span class="na">objectClass</span><span class="o">:</span><span class="w"> </span><span class="s">inetOrgPerson</span>
<span class="na">sn</span><span class="o">:</span><span class="w"> </span><span class="s">username</span>
<span class="na">cn</span><span class="o">:</span><span class="w"> </span><span class="s">username</span>
<span class="na">userPassword</span><span class="o">:</span><span class="w"> </span><span class="s">{SSHA}abcdefghi123456789</span>
<span class="na">email</span><span class="o">:</span><span class="w"> </span><span class="s">external-account@gmail.com</span>
</code></pre></div>
<p>This structure is different from what is expected/assumed from the configuration scripts of <code>docker-mailserver</code>, so it doesn't work just by using the <code>LDAP_QUERY_FILTER_...</code> settings. Instead, I had to use a custom configuration (<a href="../../../config/advanced/override-defaults/user-patches/">via <code>user-patches.sh</code></a>). I created the script <code>docker-data/dms/config/user-patches.sh</code>, with content like this:</p>
<div class="highlight"><pre><span></span><code><span class="ch">#!/bin/bash</span>
rm -f /etc/postfix/<span class="o">{</span>ldap-groups.cf,ldap-domains.cf<span class="o">}</span>
rm<span class="w"> </span>-f<span class="w"> </span>/etc/postfix/<span class="o">{</span>ldap-groups.cf,ldap-domains.cf<span class="o">}</span>
postconf <span class="se">\</span>
<span class="s2">&quot;virtual_mailbox_domains = /etc/postfix/vhost&quot;</span> <span class="se">\</span>
<span class="s2">&quot;virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf texthash:/etc/postfix/virtual&quot;</span> <span class="se">\</span>
<span class="s2">&quot;smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf&quot;</span>
postconf<span class="w"> </span><span class="se">\</span>
<span class="w"> </span><span class="s2">&quot;virtual_mailbox_domains = /etc/postfix/vhost&quot;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span><span class="s2">&quot;virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf texthash:/etc/postfix/virtual&quot;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span><span class="s2">&quot;smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf&quot;</span>
sed -i /etc/postfix/ldap-users.cf <span class="se">\</span>
-e <span class="s1">&#39;/query_filter/d&#39;</span> <span class="se">\</span>
-e <span class="s1">&#39;/result_attribute/d&#39;</span> <span class="se">\</span>
-e <span class="s1">&#39;/result_format/d&#39;</span>
cat <span class="s">&lt;&lt;EOF &gt;&gt; /etc/postfix/ldap-users.cf</span>
sed<span class="w"> </span>-i<span class="w"> </span>/etc/postfix/ldap-users.cf<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/query_filter/d&#39;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/result_attribute/d&#39;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/result_format/d&#39;</span>
cat<span class="w"> </span><span class="s">&lt;&lt;EOF &gt;&gt; /etc/postfix/ldap-users.cf</span>
<span class="s">query_filter = (uid=%u)</span>
<span class="s">result_attribute = uid</span>
<span class="s">result_format = %s@example.org</span>
<span class="s">EOF</span>
sed -i /etc/postfix/ldap-aliases.cf <span class="se">\</span>
-e <span class="s1">&#39;/domain/d&#39;</span> <span class="se">\</span>
-e <span class="s1">&#39;/query_filter/d&#39;</span> <span class="se">\</span>
-e <span class="s1">&#39;/result_attribute/d&#39;</span>
cat <span class="s">&lt;&lt;EOF &gt;&gt; /etc/postfix/ldap-aliases.cf</span>
sed<span class="w"> </span>-i<span class="w"> </span>/etc/postfix/ldap-aliases.cf<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/domain/d&#39;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/query_filter/d&#39;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s1">&#39;/result_attribute/d&#39;</span>
cat<span class="w"> </span><span class="s">&lt;&lt;EOF &gt;&gt; /etc/postfix/ldap-aliases.cf</span>
<span class="s">domain = example.org</span>
<span class="s">query_filter = (uid=%u)</span>
<span class="s">result_attribute = mail</span>
<span class="s">EOF</span>
postfix reload
postfix<span class="w"> </span>reload
</code></pre></div>
<p>You see that besides <code>query_filter</code>, I had to customize as well <code>result_attribute</code> and <code>result_format</code>.</p>
<div class="admonition note">
@ -1631,57 +1633,26 @@ postfix reload
<p>Another solution that serves as a forward-only mail-server is <a href="https://gitlab.com/docker-scripts/postfix">this</a>.</p>
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