github-com-docker-mailserver/docker-mailserver
1
0
Fork 0
mirror of https://github.com/docker-mailserver/docker-mailserver.git synced 2024-01-19 02:48:50 +00:00
Code Issues Projects Releases Wiki Activity
docker-mailserver/v13.1/examples/tutorials/mailserver-behind-proxy/index.html
github-actions[bot] ffb9043ba5 deploy: 8392e3c1a8
2023-12-29 12:59:39 +00:00

2145 lines
56 KiB
HTML
Raw Blame History

<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
<meta name="author" content="docker-mailserver (Github Organization)">
<link rel="canonical" href="https://docker-mailserver.github.io/docker-mailserver/latest/examples/tutorials/mailserver-behind-proxy/">
<link rel="prev" href="../basic-installation/">
<link rel="next" href="../crowdsec/">
<link rel="icon" href="../../../assets/logo/favicon-32x32.png">
<meta name="generator" content="mkdocs-1.5.2, mkdocs-material-9.2.8">
<title>Tutorials | Mail Server behind a Proxy - Docker Mailserver</title>
<link rel="stylesheet" href="../../../assets/stylesheets/main.046329b4.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/palette.85d0ee34.min.css">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback">
<style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style>
<link rel="stylesheet" href="../../../assets/css/customizations.css">
<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>
<body dir="ltr" data-md-color-scheme="default" data-md-color-primary="indigo" data-md-color-accent="indigo">
<script>var palette=__md_get("__palette");if(palette&&"object"==typeof palette.color)for(var key of Object.keys(palette.color))document.body.setAttribute("data-md-color-"+key,palette.color[key])</script>
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" for="__drawer"></label>
<div data-md-component="skip">
<a href="#using-dms-behind-a-proxy" class="md-skip">
Skip to content
</a>
</div>
<div data-md-component="announce">
</div>
<div data-md-color-scheme="default" data-md-component="outdated" hidden>
</div>
<header class="md-header" data-md-component="header">
<nav class="md-header__inner md-grid" aria-label="Header">
<a href="../../.." title="Docker Mailserver" class="md-header__button md-logo" aria-label="Docker Mailserver" data-md-component="logo">
<img src="../../../assets/logo/dmo-logo-white.min.svg" alt="logo">
</a>
<label class="md-header__button md-icon" for="__drawer">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z"/></svg>
</label>
<div class="md-header__title" data-md-component="header-title">
<div class="md-header__ellipsis">
<div class="md-header__topic">
<span class="md-ellipsis">
Docker Mailserver
</span>
</div>
<div class="md-header__topic" data-md-component="header-topic">
<span class="md-ellipsis">
Tutorials | Mail Server behind a Proxy
</span>
</div>
</div>
</div>
<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>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="m17.75 4.09-2.53 1.94.91 3.06-2.63-1.81-2.63 1.81.91-3.06-2.53-1.94L12.44 4l1.06-3 1.06 3 3.19.09m3.5 6.91-1.64 1.25.59 1.98-1.7-1.17-1.7 1.17.59-1.98L15.75 11l2.06-.05L18.5 9l.69 1.95 2.06.05m-2.28 4.95c.83-.08 1.72 1.1 1.19 1.85-.32.45-.66.87-1.08 1.27C15.17 23 8.84 23 4.94 19.07c-3.91-3.9-3.91-10.24 0-14.14.4-.4.82-.76 1.27-1.08.75-.53 1.93.36 1.85 1.19-.27 2.86.69 5.83 2.89 8.02a9.96 9.96 0 0 0 8.02 2.89m-1.64 2.02a12.08 12.08 0 0 1-7.8-3.47c-2.17-2.19-3.33-5-3.49-7.82-2.81 3.14-2.7 7.96.31 10.98 3.02 3.01 7.84 3.12 10.98.31Z"/></svg>
</label>
<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>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 7a5 5 0 0 1 5 5 5 5 0 0 1-5 5 5 5 0 0 1-5-5 5 5 0 0 1 5-5m0 2a3 3 0 0 0-3 3 3 3 0 0 0 3 3 3 3 0 0 0 3-3 3 3 0 0 0-3-3m0-7 2.39 3.42C13.65 5.15 12.84 5 12 5c-.84 0-1.65.15-2.39.42L12 2M3.34 7l4.16-.35A7.2 7.2 0 0 0 5.94 8.5c-.44.74-.69 1.5-.83 2.29L3.34 7m.02 10 1.76-3.77a7.131 7.131 0 0 0 2.38 4.14L3.36 17M20.65 7l-1.77 3.79a7.023 7.023 0 0 0-2.38-4.15l4.15.36m-.01 10-4.14.36c.59-.51 1.12-1.14 1.54-1.86.42-.73.69-1.5.83-2.29L20.64 17M12 22l-2.41-3.44c.74.27 1.55.44 2.41.44.82 0 1.63-.17 2.37-.44L12 22Z"/></svg>
</label>
</form>
<label class="md-header__button md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg>
</label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" required>
<label class="md-search__icon md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg>
</label>
<nav class="md-search__options" aria-label="Search">
<button type="reset" class="md-search__icon md-icon" title="Clear" aria-label="Clear" tabindex="-1">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41Z"/></svg>
</button>
</nav>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="search-result">
<div class="md-search-result__meta">
Initializing search
</div>
<ol class="md-search-result__list" role="presentation"></ol>
</div>
</div>
</div>
</div>
</div>
<div class="md-header__source">
<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 6.4.2 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 2023 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>
</div>
<div class="md-source__repository">
docker-mailserver
</div>
</a>
</div>
</nav>
</header>
<div class="md-container" data-md-component="container">
<nav class="md-tabs" aria-label="Tabs" data-md-component="tabs">
<div class="md-grid">
<ul class="md-tabs__list">
<li class="md-tabs__item">
<a href="../../.." class="md-tabs__link">
Home
</a>
</li>
<li class="md-tabs__item">
<a href="../../../introduction/" class="md-tabs__link">
Introduction
</a>
</li>
<li class="md-tabs__item">
<a href="../../../usage/" class="md-tabs__link">
Usage
</a>
</li>
<li class="md-tabs__item">
<a href="../../../config/environment/" class="md-tabs__link">
Configuration
</a>
</li>
<li class="md-tabs__item md-tabs__item--active">
<a href="../basic-installation/" class="md-tabs__link">
Examples
</a>
</li>
<li class="md-tabs__item">
<a href="../../../faq/" class="md-tabs__link">
FAQ
</a>
</li>
<li class="md-tabs__item">
<a href="../../../contributing/general/" class="md-tabs__link">
Contributing
</a>
</li>
<li class="md-tabs__item">
<a href="https://hub.docker.com/r/mailserver/docker-mailserver/" class="md-tabs__link">
DockerHub
</a>
</li>
<li class="md-tabs__item">
<a href="https://github.com/docker-mailserver/docker-mailserver/pkgs/container/docker-mailserver" class="md-tabs__link">
GHCR
</a>
</li>
</ul>
</div>
</nav>
<main class="md-main" data-md-component="main">
<div class="md-main__inner md-grid">
<div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" >
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary md-nav--lifted" aria-label="Navigation" data-md-level="0">
<label class="md-nav__title" for="__drawer">
<a href="../../.." title="Docker Mailserver" class="md-nav__button md-logo" aria-label="Docker Mailserver" data-md-component="logo">
<img src="../../../assets/logo/dmo-logo-white.min.svg" alt="logo">
</a>
Docker Mailserver
</label>
<div class="md-nav__source">
<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 6.4.2 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 2023 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>
</div>
<div class="md-source__repository">
docker-mailserver
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../.." class="md-nav__link">
<span class="md-ellipsis">
Home
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../introduction/" class="md-nav__link">
<span class="md-ellipsis">
Introduction
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../usage/" class="md-nav__link">
<span class="md-ellipsis">
Usage
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4" >
<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
<span class="md-ellipsis">
Configuration
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<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
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/environment/" class="md-nav__link">
<span class="md-ellipsis">
Environment Variables
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/user-management/" class="md-nav__link">
<span class="md-ellipsis">
User Management
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_3" >
<label class="md-nav__link" for="__nav_4_3" id="__nav_4_3_label" tabindex="0">
<span class="md-ellipsis">
Best Practices
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_3_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_3">
<span class="md-nav__icon md-icon"></span>
Best Practices
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/best-practices/dkim_dmarc_spf/" class="md-nav__link">
<span class="md-ellipsis">
DKIM, DMARC & SPF
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/best-practices/autodiscover/" class="md-nav__link">
<span class="md-ellipsis">
Auto-discovery
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_4" >
<label class="md-nav__link" for="__nav_4_4" id="__nav_4_4_label" tabindex="0">
<span class="md-ellipsis">
Security
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_4_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_4">
<span class="md-nav__icon md-icon"></span>
Security
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/security/understanding-the-ports/" class="md-nav__link">
<span class="md-ellipsis">
Understanding the Ports
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/security/ssl/" class="md-nav__link">
<span class="md-ellipsis">
SSL/TLS
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/security/fail2ban/" class="md-nav__link">
<span class="md-ellipsis">
Fail2Ban
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/security/mail_crypt/" class="md-nav__link">
<span class="md-ellipsis">
Mail Encryption
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/security/rspamd/" class="md-nav__link">
<span class="md-ellipsis">
Rspamd
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../../config/debugging/" class="md-nav__link">
<span class="md-ellipsis">
Debugging
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/pop3/" class="md-nav__link">
<span class="md-ellipsis">
Mail Delivery with POP3
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/setup.sh/" class="md-nav__link">
<span class="md-ellipsis">
About setup.sh
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_8" >
<label class="md-nav__link" for="__nav_4_8" id="__nav_4_8_label" tabindex="0">
<span class="md-ellipsis">
Advanced Configuration
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_8_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_8">
<span class="md-nav__icon md-icon"></span>
Advanced Configuration
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/advanced/optional-config/" class="md-nav__link">
<span class="md-ellipsis">
Optional Configuration
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_8_2" >
<label class="md-nav__link" for="__nav_4_8_2" id="__nav_4_8_2_label" tabindex="0">
<span class="md-ellipsis">
Maintenance
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="3" aria-labelledby="__nav_4_8_2_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_8_2">
<span class="md-nav__icon md-icon"></span>
Maintenance
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/advanced/maintenance/update-and-cleanup/" class="md-nav__link">
<span class="md-ellipsis">
Update and Cleanup
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_8_3" >
<label class="md-nav__link" for="__nav_4_8_3" id="__nav_4_8_3_label" tabindex="0">
<span class="md-ellipsis">
Override the Default Configs
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" data-md-level="3" aria-labelledby="__nav_4_8_3_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_8_3">
<span class="md-nav__icon md-icon"></span>
Override the Default Configs
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/advanced/override-defaults/dovecot/" class="md-nav__link">
<span class="md-ellipsis">
Dovecot
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/override-defaults/postfix/" class="md-nav__link">
<span class="md-ellipsis">
Postfix
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/override-defaults/user-patches/" class="md-nav__link">
<span class="md-ellipsis">
Modifications via Script
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/auth-ldap/" class="md-nav__link">
<span class="md-ellipsis">
LDAP Authentication
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/mail-sieve/" class="md-nav__link">
<span class="md-ellipsis">
Email Filtering with Sieve
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/mail-fetchmail/" class="md-nav__link">
<span class="md-ellipsis">
Email Gathering with Fetchmail
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/mail-getmail/" class="md-nav__link">
<span class="md-ellipsis">
Email Gathering with Getmail
</span>
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_4_8_8" >
<label class="md-nav__link" for="__nav_4_8_8" id="__nav_4_8_8_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_8_label" aria-expanded="false">
<label class="md-nav__title" for="__nav_4_8_8">
<span class="md-nav__icon md-icon"></span>
Email Forwarding
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../config/advanced/mail-forwarding/relay-hosts/" class="md-nav__link">
<span class="md-ellipsis">
Relay Hosts
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/mail-forwarding/aws-ses/" class="md-nav__link">
<span class="md-ellipsis">
AWS SES
</span>
</a>
</li>
</ul>
</nav>
</li>
<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>
<li class="md-nav__item">
<a href="../../../config/advanced/kubernetes/" class="md-nav__link">
<span class="md-ellipsis">
Kubernetes
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/ipv6/" class="md-nav__link">
<span class="md-ellipsis">
IPv6
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../config/advanced/podman/" class="md-nav__link">
<span class="md-ellipsis">
Podman
</span>
</a>
</li>
<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>
<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" checked>
<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
<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>
<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>
<li class="md-nav__item">
<a href="../basic-installation/" class="md-nav__link">
<span class="md-ellipsis">
Basic Installation
</span>
</a>
</li>
<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">
Mailserver behind Proxy
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<a href="./" class="md-nav__link md-nav__link--active">
<span class="md-ellipsis">
Mailserver behind Proxy
</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="#using-dms-behind-a-proxy" class="md-nav__link">
Using DMS behind a Proxy
</a>
<nav class="md-nav" aria-label="Using DMS behind a Proxy">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#information" class="md-nav__link">
Information
</a>
</li>
<li class="md-nav__item">
<a href="#configuration-of-the-used-proxy-software" class="md-nav__link">
Configuration of the used Proxy Software
</a>
</li>
<li class="md-nav__item">
<a href="#configuration-of-the-backend-dovecot-and-postfix" class="md-nav__link">
Configuration of the Backend (dovecot and postfix)
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<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>
<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>
<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>
<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>
<li class="md-nav__item">
<a href="../../use-cases/auth-lua/" class="md-nav__link">
<span class="md-ellipsis">
Lua Authentication
</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>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle md-toggle--indeterminate" type="checkbox" id="__nav_7" >
<label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0">
<span class="md-ellipsis">
Contributing
</span>
<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>
Contributing
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../contributing/general/" class="md-nav__link">
<span class="md-ellipsis">
General Information
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../contributing/tests/" class="md-nav__link">
<span class="md-ellipsis">
Tests
</span>
</a>
</li>
<li class="md-nav__item">
<a href="../../../contributing/issues-and-pull-requests/" class="md-nav__link">
<span class="md-ellipsis">
Issues and Pull Requests
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="https://hub.docker.com/r/mailserver/docker-mailserver/" class="md-nav__link">
<span class="md-ellipsis">
DockerHub
</span>
</a>
</li>
<li class="md-nav__item">
<a href="https://github.com/docker-mailserver/docker-mailserver/pkgs/container/docker-mailserver" class="md-nav__link">
<span class="md-ellipsis">
GHCR
</span>
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<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="#using-dms-behind-a-proxy" class="md-nav__link">
Using DMS behind a Proxy
</a>
<nav class="md-nav" aria-label="Using DMS behind a Proxy">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#information" class="md-nav__link">
Information
</a>
</li>
<li class="md-nav__item">
<a href="#configuration-of-the-used-proxy-software" class="md-nav__link">
Configuration of the used Proxy Software
</a>
</li>
<li class="md-nav__item">
<a href="#configuration-of-the-backend-dovecot-and-postfix" class="md-nav__link">
Configuration of the Backend (dovecot and postfix)
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content" data-md-component="content">
<article class="md-content__inner md-typeset">
<a href="https://github.com/docker-mailserver/docker-mailserver/edit/master/docs/content/examples/tutorials/mailserver-behind-proxy.md" title="Edit this page" class="md-content__button md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M10 20H6V4h7v5h5v3.1l2-2V8l-6-6H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h4v-2m10.2-7c.1 0 .3.1.4.2l1.3 1.3c.2.2.2.6 0 .8l-1 1-2.1-2.1 1-1c.1-.1.2-.2.4-.2m0 3.9L14.1 23H12v-2.1l6.1-6.1 2.1 2.1Z"/></svg>
</a>
<a href="https://github.com/docker-mailserver/docker-mailserver/raw/master/docs/content/examples/tutorials/mailserver-behind-proxy.md" title="View source of this page" class="md-content__button md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M17 18c.56 0 1 .44 1 1s-.44 1-1 1-1-.44-1-1 .44-1 1-1m0-3c-2.73 0-5.06 1.66-6 4 .94 2.34 3.27 4 6 4s5.06-1.66 6-4c-.94-2.34-3.27-4-6-4m0 6.5a2.5 2.5 0 0 1-2.5-2.5 2.5 2.5 0 0 1 2.5-2.5 2.5 2.5 0 0 1 2.5 2.5 2.5 2.5 0 0 1-2.5 2.5M9.27 20H6V4h7v5h5v4.07c.7.08 1.36.25 2 .49V8l-6-6H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h4.5a8.15 8.15 0 0 1-1.23-2Z"/></svg>
</a>
<h1>Mailserver behind Proxy</h1>
<h2 id="using-dms-behind-a-proxy"><a class="toclink" href="#using-dms-behind-a-proxy">Using DMS behind a Proxy</a></h2>
<h3 id="information"><a class="toclink" href="#information">Information</a></h3>
<p>If you are hiding your container behind a proxy service you might have discovered that the proxied requests from now on contain the proxy IP as the request origin. Whilst this behavior is technical correct it produces certain problems on the containers behind the proxy as they cannot distinguish the real origin of the requests anymore.</p>
<p>To solve this problem on TCP connections we can make use of the <a href="https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt">proxy protocol</a>. Compared to other workarounds that exist (<code>X-Forwarded-For</code> which only works for HTTP requests or <code>Tproxy</code> that requires you to recompile your kernel) the proxy protocol:</p>
<ul>
<li>It is protocol agnostic (can work with any layer 7 protocols, even when encrypted).</li>
<li>It does not require any infrastructure changes.</li>
<li>NAT-ing firewalls have no impact it.</li>
<li>It is scalable.</li>
</ul>
<p>There is only one condition: <strong>both endpoints</strong> of the connection MUST be compatible with proxy protocol.</p>
<p>Luckily <code>dovecot</code> and <code>postfix</code> are both Proxy-Protocol ready softwares so it depends only on your used reverse-proxy / loadbalancer.</p>
<h3 id="configuration-of-the-used-proxy-software"><a class="toclink" href="#configuration-of-the-used-proxy-software">Configuration of the used Proxy Software</a></h3>
<p>The configuration depends on the used proxy system. I will provide the configuration examples of <a href="https://traefik.io/">traefik v2</a> using IMAP and SMTP with implicit TLS.</p>
<p>Feel free to add your configuration if you achieved the same goal using different proxy software below:</p>
<details>
<summary>Traefik v2</summary>
<p>Truncated configuration of traefik itself:</p>
<div class="highlight"><pre><span></span><code><span class="nt">services</span><span class="p">:</span>
<span class="w"> </span><span class="nt">reverse-proxy</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">docker.io/traefik:latest</span><span class="w"> </span><span class="c1"># v2.5</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">docker-traefik</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>
<span class="w"> </span><span class="nt">command</span><span class="p">:</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--providers.docker&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--providers.docker.exposedbydefault=false&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--providers.docker.network=proxy&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entrypoints.web.address=:80&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entryPoints.websecure.address=:443&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entryPoints.smtp.address=:25&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entryPoints.smtp-ssl.address=:465&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entryPoints.imap-ssl.address=:993&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;--entryPoints.sieve.address=:4190&quot;</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">&quot;25:25&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;465:465&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;993:993&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;4190:4190&quot;</span>
<span class="p p-Indicator">[</span><span class="nv">...</span><span class="p p-Indicator">]</span>
</code></pre></div>
<p>Truncated list of necessary labels on the DMS container:</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="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">restart</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">always</span>
<span class="w"> </span><span class="nt">networks</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">proxy</span>
<span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.enable=true&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp.rule=HostSNI(`*`)&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp.entrypoints=smtp&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp.service=smtp&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.smtp.loadbalancer.server.port=25&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.smtp.loadbalancer.proxyProtocol.version=1&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp-ssl.rule=HostSNI(`*`)&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp-ssl.entrypoints=smtp-ssl&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp-ssl.tls.passthrough=true&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.smtp-ssl.service=smtp-ssl&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.smtp-ssl.loadbalancer.server.port=465&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.smtp-ssl.loadbalancer.proxyProtocol.version=1&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.imap-ssl.rule=HostSNI(`*`)&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.imap-ssl.entrypoints=imap-ssl&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.imap-ssl.service=imap-ssl&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.imap-ssl.tls.passthrough=true&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.imap-ssl.loadbalancer.server.port=10993&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.imap-ssl.loadbalancer.proxyProtocol.version=2&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.sieve.rule=HostSNI(`*`)&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.sieve.entrypoints=sieve&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.routers.sieve.service=sieve&quot;</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;traefik.tcp.services.sieve.loadbalancer.server.port=4190&quot;</span>
<span class="p p-Indicator">[</span><span class="nv">...</span><span class="p p-Indicator">]</span>
</code></pre></div>
<p>Keep in mind that it is necessary to use port <code>10993</code> here. More information below at <code>dovecot</code> configuration.</p>
</details>
<h3 id="configuration-of-the-backend-dovecot-and-postfix"><a class="toclink" href="#configuration-of-the-backend-dovecot-and-postfix">Configuration of the Backend (<code>dovecot</code> and <code>postfix</code>)</a></h3>
<p>The following changes can be achieved completely by adding the content to the appropriate files by using the projects <a href="../../../config/advanced/optional-config/">function to overwrite config files</a>.</p>
<p>Changes for <code>postfix</code> can be applied by adding the following content to <code>docker-data/dms/config/postfix-main.cf</code>:</p>
<div class="highlight"><pre><span></span><code><span class="na">postscreen_upstream_proxy_protocol</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">haproxy</span>
</code></pre></div>
<p>and to <code>docker-data/dms/config/postfix-master.cf</code>:</p>
<div class="highlight"><pre><span></span><code><span class="na">submission/inet/smtpd_upstream_proxy_protocol</span><span class="o">=</span><span class="s">haproxy</span>
<span class="na">submissions/inet/smtpd_upstream_proxy_protocol</span><span class="o">=</span><span class="s">haproxy</span>
</code></pre></div>
<p>Changes for <code>dovecot</code> can be applied by adding the following content to <code>docker-data/dms/config/dovecot.cf</code>:</p>
<div class="highlight"><pre><span></span><code><span class="na">haproxy_trusted_networks</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&lt;your-proxy-ip&gt;, &lt;optional-cidr-notation&gt;</span>
<span class="na">haproxy_timeout</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">3 secs</span>
<span class="na">service imap-login {</span>
<span class="w"> </span><span class="na">inet_listener imaps {</span>
<span class="w"> </span><span class="na">haproxy</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">yes</span>
<span class="w"> </span><span class="na">ssl</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">yes</span>
<span class="w"> </span><span class="na">port</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">10993</span>
<span class="w"> </span><span class="na">}</span>
<span class="na">}</span>
</code></pre></div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Port <code>10993</code> is used here to avoid conflicts with internal systems like <code>postscreen</code> and <code>amavis</code> as they will exchange messages on the default port and obviously have a different origin then compared to the proxy.</p>
</div>
</article>
</div>
</div>
<button type="button" class="md-top md-icon" data-md-component="top" hidden>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8v12Z"/></svg>
Back to top
</button>
</main>
<footer class="md-footer">
<div class="md-footer-meta md-typeset">
<div class="md-footer-meta__inner md-grid">
<div class="md-copyright">
<div class="md-copyright__highlight">
<p>&copy <a href="https://github.com/docker-mailserver"><em>Docker Mailserver Organization</em></a><br/><span>This project is licensed under the MIT license.</span></p>
</div>
Made with
<a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
Material for MkDocs
</a>
</div>
</div>
</div>
</footer>
</div>
<div class="md-dialog" data-md-component="dialog">
<div class="md-dialog__inner md-typeset"></div>
</div>
<script id="__config" type="application/json">{"base": "../../..", "features": ["navigation.tabs", "navigation.top", "navigation.expand", "navigation.instant", "content.action.edit", "content.action.view", "content.code.annotate"], "search": "../../../assets/javascripts/workers/search.dfff1995.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
<script src="../../../assets/javascripts/bundle.dff1b7c8.min.js"></script>
</body>
</html>
Reference in a new issue View git blame Copy permalink