mailcow-dockerized-docs/de/prerequisite/prerequisite-dns/index.html

2702 Zeilen
68 KiB
HTML

<!doctype html>
<html lang="de" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="canonical" href="https://mailcow.github.io/mailcow-dockerized-docs/de/prerequisite/prerequisite-dns/">
<link rel="icon" href="../../../assets/images/favicon.png">
<meta name="generator" content="mkdocs-1.2.3, mkdocs-material-8.1.11">
<title>DNS Einstellungen - mailcow: dockerized documentation</title>
<link rel="stylesheet" href="../../../assets/stylesheets/main.50e68009.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/palette.e6a45f82.min.css">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style>
<link rel="stylesheet" href="../../../assets/stylesheets/extra.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>
</head>
<body dir="ltr" data-md-color-scheme="default" data-md-color-primary="" data-md-color-accent="">
<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="#referenzen" class="md-skip">
Zum Inhalt
</a>
</div>
<div data-md-component="announce">
</div>
<header class="md-header" data-md-component="header">
<nav class="md-header__inner md-grid" aria-label="Header">
<a href="../../.." title="mailcow: dockerized documentation" class="md-header__button md-logo" aria-label="mailcow: dockerized documentation" data-md-component="logo">
<img src="../../../assets/images/logo.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">
mailcow: dockerized documentation
</span>
</div>
<div class="md-header__topic" data-md-component="header-topic">
<span class="md-ellipsis">
DNS Einstellungen
</span>
</div>
</div>
</div>
<form class="md-header__option" data-md-component="palette">
<input class="md-option" data-md-color-media="" data-md-color-scheme="default" data-md-color-primary="" data-md-color-accent="" aria-label="Dark Mode" type="radio" name="__palette" id="__palette_1">
<label class="md-header__button md-icon" title="Dark Mode" for="__palette_2" hidden>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M17 6H7c-3.31 0-6 2.69-6 6s2.69 6 6 6h10c3.31 0 6-2.69 6-6s-2.69-6-6-6zm0 10H7c-2.21 0-4-1.79-4-4s1.79-4 4-4h10c2.21 0 4 1.79 4 4s-1.79 4-4 4zM7 9c-1.66 0-3 1.34-3 3s1.34 3 3 3 3-1.34 3-3-1.34-3-3-3z"/></svg>
</label>
<input class="md-option" data-md-color-media="" data-md-color-scheme="slate" data-md-color-primary="" data-md-color-accent="" aria-label="Light Mode" type="radio" name="__palette" id="__palette_2">
<label class="md-header__button md-icon" title="Light Mode" for="__palette_1" hidden>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M17 7H7a5 5 0 0 0-5 5 5 5 0 0 0 5 5h10a5 5 0 0 0 5-5 5 5 0 0 0-5-5m0 8a3 3 0 0 1-3-3 3 3 0 0 1 3-3 3 3 0 0 1 3 3 3 3 0 0 1-3 3z"/></svg>
</label>
</form>
<div class="md-header__option">
<div class="md-select">
<button class="md-header__button md-icon" aria-label="Sprache wechseln">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="m12.87 15.07-2.54-2.51.03-.03A17.52 17.52 0 0 0 14.07 6H17V4h-7V2H8v2H1v2h11.17C11.5 7.92 10.44 9.75 9 11.35 8.07 10.32 7.3 9.19 6.69 8h-2c.73 1.63 1.73 3.17 2.98 4.56l-5.09 5.02L4 19l5-5 3.11 3.11.76-2.04M18.5 10h-2L12 22h2l1.12-3h4.75L21 22h2l-4.5-12m-2.62 7 1.62-4.33L19.12 17h-3.24z"/></svg>
</button>
<div class="md-select__inner">
<ul class="md-select__list">
<li class="md-select__item">
<a href="../../../" hreflang="en" class="md-select__link">
English
</a>
</li>
<li class="md-select__item">
<a href="../../" hreflang="de" class="md-select__link">
Deutsch
</a>
</li>
</ul>
</div>
</div>
</div>
<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="Suche" placeholder="Suche" 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="Suche">
<button type="reset" class="md-search__icon md-icon" aria-label="Zurücksetzen" 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">
Suche wird initialisiert
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
<div class="md-header__source">
<a href="https://github.com/mailcow/mailcow-dockerized/" title="Quellcode" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.0.0 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="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
</div>
<div class="md-source__repository">
mailcow/mailcow-dockerized
</div>
</a>
</div>
</nav>
</header>
<div class="md-container" data-md-component="container">
<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" aria-label="Navigation" data-md-level="0">
<label class="md-nav__title" for="__drawer">
<a href="../../.." title="mailcow: dockerized documentation" class="md-nav__button md-logo" aria-label="mailcow: dockerized documentation" data-md-component="logo">
<img src="../../../assets/images/logo.svg" alt="logo">
</a>
mailcow: dockerized documentation
</label>
<div class="md-nav__source">
<a href="https://github.com/mailcow/mailcow-dockerized/" title="Quellcode" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.0.0 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="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
</div>
<div class="md-source__repository">
mailcow/mailcow-dockerized
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../" class="md-nav__link">
Informationen & Support
</a>
</li>
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_2" type="checkbox" id="__nav_2" checked>
<label class="md-nav__link" for="__nav_2">
Voraussetzungen
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Voraussetzungen" data-md-level="1">
<label class="md-nav__title" for="__nav_2">
<span class="md-nav__icon md-icon"></span>
Voraussetzungen
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../prerequisite-system/" class="md-nav__link">
Systemvoraussetzungen
</a>
</li>
<li class="md-nav__item md-nav__item--active">
<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
DNS Einstellungen
<span class="md-nav__icon md-icon"></span>
</label>
<a href="./" class="md-nav__link md-nav__link--active">
DNS Einstellungen
</a>
<nav class="md-nav md-nav--secondary" aria-label="Inhaltsverzeichnis">
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
Inhaltsverzeichnis
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#referenzen" class="md-nav__link">
Referenzen
</a>
</li>
<li class="md-nav__item">
<a href="#reverse-dns-ihrer-ip-adresse" class="md-nav__link">
Reverse DNS Ihrer IP-Adresse
</a>
</li>
<li class="md-nav__item">
<a href="#die-minimale-dns-konfiguration" class="md-nav__link">
Die minimale DNS-Konfiguration
</a>
</li>
<li class="md-nav__item">
<a href="#dkim-spf-und-dmarc" class="md-nav__link">
DKIM, SPF und DMARC
</a>
</li>
<li class="md-nav__item">
<a href="#die-erweiterte-dns-konfiguration" class="md-nav__link">
Die erweiterte DNS-Konfiguration
</a>
</li>
<li class="md-nav__item">
<a href="#testen" class="md-nav__link">
Testen
</a>
</li>
<li class="md-nav__item">
<a href="#verschiedenes" class="md-nav__link">
Verschiedenes
</a>
<nav class="md-nav" aria-label="Verschiedenes">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#optionale-dmarc-statistiken" class="md-nav__link">
Optionale DMARC-Statistiken
</a>
</li>
<li class="md-nav__item">
<a href="#e-mail-test-fur-spf-dkim-und-dmarc" class="md-nav__link">
E-Mail-Test für SPF, DKIM und DMARC:
</a>
</li>
<li class="md-nav__item">
<a href="#fully-qualified-domain-name-fqdn" class="md-nav__link">
Fully Qualified Domain Name (FQDN)
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3" type="checkbox" id="__nav_3" >
<label class="md-nav__link" for="__nav_3">
Installation, Update und Migration
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Installation, Update und Migration" data-md-level="1">
<label class="md-nav__title" for="__nav_3">
<span class="md-nav__icon md-icon"></span>
Installation, Update und Migration
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../i_u_m/i_u_m_install/" class="md-nav__link">
Installation
</a>
</li>
<li class="md-nav__item">
<a href="../../i_u_m/i_u_m_update/" class="md-nav__link">
Update
</a>
</li>
<li class="md-nav__item">
<a href="../../i_u_m/i_u_m_migration/" class="md-nav__link">
Migration
</a>
</li>
<li class="md-nav__item">
<a href="../../i_u_m/i_u_m_deinstall/" class="md-nav__link">
Deinstallation
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4" type="checkbox" id="__nav_4" >
<label class="md-nav__link" for="__nav_4">
Post-Installationsaufgaben
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Post-Installationsaufgaben" data-md-level="1">
<label class="md-nav__title" for="__nav_4">
<span class="md-nav__icon md-icon"></span>
Post-Installationsaufgaben
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-ssl/" class="md-nav__link">
Erweitertes SSL
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-disable_ipv6/" class="md-nav__link">
IPv6 deaktivieren
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-dmarc_reporting/" class="md-nav__link">
DMARC Reporting
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-ip_bindings/" class="md-nav__link">
IP-Verbindungen
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-local_mta/" class="md-nav__link">
Lokaler MTA auf Docker-Host
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-logging/" class="md-nav__link">
Logging
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-rp/" class="md-nav__link">
Reverse Proxy
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-rspamd_ui/" class="md-nav__link">
Rspamd UI
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-snat/" class="md-nav__link">
SNAT
</a>
</li>
<li class="md-nav__item">
<a href="../../post_installation/firststeps-sync_jobs_migration/" class="md-nav__link">
Migration von Sync-Jobs
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" >
<label class="md-nav__link" for="__nav_5">
Modelle
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Modelle" data-md-level="1">
<label class="md-nav__title" for="__nav_5">
<span class="md-nav__icon md-icon"></span>
Modelle
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../models/model-acl/" class="md-nav__link">
ACL
</a>
</li>
<li class="md-nav__item">
<a href="../../models/model-passwd/" class="md-nav__link">
Passwort-Hashing
</a>
</li>
<li class="md-nav__item">
<a href="../../models/model-sender_rcv/" class="md-nav__link">
Sender- und Empfängermodell
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" >
<label class="md-nav__link" for="__nav_6">
Allgemeine Fehlersuche
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Allgemeine Fehlersuche" data-md-level="1">
<label class="md-nav__title" for="__nav_6">
<span class="md-nav__icon md-icon"></span>
Allgemeine Fehlersuche
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../troubleshooting/debug/" class="md-nav__link">
Einführung
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-admin_login_sogo/" class="md-nav__link">
Admin-Anmeldung bei SOGo
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-rspamd_memory_leaks/" class="md-nav__link">
Fortgeschritten: Memory-Leaks in Rspamd finden
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-attach_service/" class="md-nav__link">
In einen Container wechseln (CLI)
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-common_problems/" class="md-nav__link">
Häufig auftretende Probleme
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-logs/" class="md-nav__link">
Logs
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-mysql_upgrade/" class="md-nav__link">
Manuelles MySQL-Upgrade
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-mysql_aria/" class="md-nav__link">
Abgestürzte Aria-Speicher-Engine wiederherstellen
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-rm_volumes/" class="md-nav__link">
Persistente Daten löschen
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-reset_pw/" class="md-nav__link">
Passwörter zurücksetzen (inkl. SQL)
</a>
</li>
<li class="md-nav__item">
<a href="../../troubleshooting/debug-reset_tls/" class="md-nav__link">
TLS-Zertifikate zurücksetzen
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" >
<label class="md-nav__link" for="__nav_7">
Sichern & Wiederherstellen
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Sichern & Wiederherstellen" data-md-level="1">
<label class="md-nav__title" for="__nav_7">
<span class="md-nav__icon md-icon"></span>
Sichern & Wiederherstellen
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_1" type="checkbox" id="__nav_7_1" >
<label class="md-nav__link" for="__nav_7_1">
Sicherung und Wiederherstellung von Komponenten
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Sicherung und Wiederherstellung von Komponenten" data-md-level="2">
<label class="md-nav__title" for="__nav_7_1">
<span class="md-nav__icon md-icon"></span>
Sicherung und Wiederherstellung von Komponenten
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-backup/" class="md-nav__link">
Sicherung
</a>
</li>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-restore/" class="md-nav__link">
Wiederherstellung
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-coldstandby/" class="md-nav__link">
Cold-standby (rollende Sicherung)
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_3" type="checkbox" id="__nav_7_3" >
<label class="md-nav__link" for="__nav_7_3">
Manuelle Sicherung
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Manuelle Sicherung" data-md-level="2">
<label class="md-nav__title" for="__nav_7_3">
<span class="md-nav__icon md-icon"></span>
Manuelle Sicherung
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-backup_restore-maildir/" class="md-nav__link">
Mail-Verzeichnis
</a>
</li>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-backup_restore-mysql/" class="md-nav__link">
MySQL (mysqldump)
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_4" type="checkbox" id="__nav_7_4" >
<label class="md-nav__link" for="__nav_7_4">
Interne mailcow Sicherungen
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Interne mailcow Sicherungen" data-md-level="2">
<label class="md-nav__title" for="__nav_7_4">
<span class="md-nav__icon md-icon"></span>
Interne mailcow Sicherungen
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../backup_restore/b_n_r-accidental_deletion/" class="md-nav__link">
Versehentlich gelöschte Daten wiederherstellen
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8" type="checkbox" id="__nav_8" >
<label class="md-nav__link" for="__nav_8">
Anleitungen/Beispiele
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Anleitungen/Beispiele" data-md-level="1">
<label class="md-nav__title" for="__nav_8">
<span class="md-nav__icon md-icon"></span>
Anleitungen/Beispiele
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_1" type="checkbox" id="__nav_8_1" >
<label class="md-nav__link" for="__nav_8_1">
mailcow UI
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="mailcow UI" data-md-level="2">
<label class="md-nav__title" for="__nav_8_1">
<span class="md-nav__icon md-icon"></span>
mailcow UI
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-bl_wl/" class="md-nav__link">
Blacklist / Whitelist
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-config/" class="md-nav__link">
Konfiguration
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-css/" class="md-nav__link">
CSS-Ãœberschreibungen
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-pushover/" class="md-nav__link">
Pushover
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-spamfilter/" class="md-nav__link">
Spamfilter
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-tagging/" class="md-nav__link">
Tagging (Markierungen)
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-spamalias/" class="md-nav__link">
Temporäre E-Mail-Aliase
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-tfa/" class="md-nav__link">
Zwei-Faktoren-Authentifizierung
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-fido/" class="md-nav__link">
WebAuthn / FIDO2
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_2" type="checkbox" id="__nav_8_2" >
<label class="md-nav__link" for="__nav_8_2">
Postfix
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Postfix" data-md-level="2">
<label class="md-nav__title" for="__nav_8_2">
<span class="md-nav__icon md-icon"></span>
Postfix
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-trust_networks/" class="md-nav__link">
Vertrauenswürdige Netzwerke hinzufügen
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-custom_transport/" class="md-nav__link">
Benutzerdefinierte Transportmaps
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-extra_cf/" class="md-nav__link">
main.cf anpassen/erweitern
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-disable_sender_verification/" class="md-nav__link">
Überprüfung der Absenderadressen deaktivieren
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-attachment_size/" class="md-nav__link">
Maximale Nachrichtengröße (Größe des Anhangs)
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-relayhost/" class="md-nav__link">
Relayhosts
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-pflogsumm/" class="md-nav__link">
Statistik mit pflogsumm
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Postfix/u_e-postfix-postscreen_whitelist/" class="md-nav__link">
IP in Postscreen auf die Whitelist setzen
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_3" type="checkbox" id="__nav_8_3" >
<label class="md-nav__link" for="__nav_8_3">
Unbound
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Unbound" data-md-level="2">
<label class="md-nav__title" for="__nav_8_3">
<span class="md-nav__icon md-icon"></span>
Unbound
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Unbound/u_e-unbound-fwd/" class="md-nav__link">
Verwendung eines externen DNS-Dienstes
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_4" type="checkbox" id="__nav_8_4" >
<label class="md-nav__link" for="__nav_8_4">
Dovecot
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Dovecot" data-md-level="2">
<label class="md-nav__title" for="__nav_8_4">
<span class="md-nav__icon md-icon"></span>
Dovecot
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-extra_conf/" class="md-nav__link">
Anpassen/Erweitern von dovecot.conf
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-any_acl/" class="md-nav__link">
Aktivierung von "any" ACL-Einstellungen
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-expunge/" class="md-nav__link">
Löschen der Mails eines Benutzers
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-fts/" class="md-nav__link">
FTS (Solr)
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-idle_interval/" class="md-nav__link">
IMAP IDLE-Intervall
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-mail-crypt/" class="md-nav__link">
Mail crypt
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-more/" class="md-nav__link">
Weitere Beispiele mit DOVEADM
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-vmail-volume/" class="md-nav__link">
Maildir verschieben (vmail)
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-public_folder/" class="md-nav__link">
Öffentliche Ordner
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-static_master/" class="md-nav__link">
Statischer Hauptbenutzer
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Dovecot/u_e-dovecot-catchall_vacation/" class="md-nav__link">
Urlaubsantworten für Catchall-Adressen
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_5" type="checkbox" id="__nav_8_5" >
<label class="md-nav__link" for="__nav_8_5">
Nginx
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Nginx" data-md-level="2">
<label class="md-nav__title" for="__nav_8_5">
<span class="md-nav__icon md-icon"></span>
Nginx
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Nginx/u_e-nginx_webmail-site/" class="md-nav__link">
Subdomäne webmail.example.org erstellen
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Nginx/u_e-nginx_custom/" class="md-nav__link">
Benutzerdefinierte Seiten
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_6" type="checkbox" id="__nav_8_6" >
<label class="md-nav__link" for="__nav_8_6">
Watchdog
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Watchdog" data-md-level="2">
<label class="md-nav__title" for="__nav_8_6">
<span class="md-nav__icon md-icon"></span>
Watchdog
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Watchdog/u_e-watchdog-thresholds/" class="md-nav__link">
Thresholds
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Redis/u_e-redis/" class="md-nav__link">
Redis
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Rspamd/u_e-rspamd/" class="md-nav__link">
Rspamd
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/SOGo/u_e-sogo/" class="md-nav__link">
SOGo
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_10" type="checkbox" id="__nav_8_10" >
<label class="md-nav__link" for="__nav_8_10">
Docker
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Docker" data-md-level="2">
<label class="md-nav__title" for="__nav_8_10">
<span class="md-nav__icon md-icon"></span>
Docker
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/Docker/u_e-docker-cust_dockerfiles/" class="md-nav__link">
Dockerfiles anpassen
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Docker/u_e-docker-dc_bash_compl/" class="md-nav__link">
Docker Compose Bash Completion
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-why_unbound/" class="md-nav__link">
Warum unbound?
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-autodiscover_config/" class="md-nav__link">
Autodiscover / Autoconfig
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-80_to_443/" class="md-nav__link">
HTTP auf HTTPS umleiten
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-reeanble-weak-protocols/" class="md-nav__link">
TLS 1.0 und TLS 1.1 wieder aktivieren
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-update-hooks/" class="md-nav__link">
Skripte vor und nach Aktualisierungen ausführen
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_9" type="checkbox" id="__nav_9" >
<label class="md-nav__link" for="__nav_9">
Client-Konfiguration
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Client-Konfiguration" data-md-level="1">
<label class="md-nav__title" for="__nav_9">
<span class="md-nav__icon md-icon"></span>
Client-Konfiguration
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../client/client/" class="md-nav__link">
Ãœbersicht
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-android/" class="md-nav__link">
Android
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-apple/" class="md-nav__link">
Apple macOS / iOS
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-emclient/" class="md-nav__link">
eM Client
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-kontact/" class="md-nav__link">
KDE Kontact
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-outlook/" class="md-nav__link">
Microsoft Outlook
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-thunderbird/" class="md-nav__link">
Mozilla Thunderbird
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-windows/" class="md-nav__link">
Windows Mail
</a>
</li>
<li class="md-nav__item">
<a href="../../client/client-manual/" class="md-nav__link">
Manuelle Konfiguration
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_10" type="checkbox" id="__nav_10" >
<label class="md-nav__link" for="__nav_10">
Anwendungen von Drittanbietern
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Anwendungen von Drittanbietern" data-md-level="1">
<label class="md-nav__title" for="__nav_10">
<span class="md-nav__icon md-icon"></span>
Anwendungen von Drittanbietern
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../third_party/third_party-borgmatic/" class="md-nav__link">
Borgmatic-Sicherung
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-exchange_onprem/" class="md-nav__link">
Exchange Hybrid Setup
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-gitea/" class="md-nav__link">
Gitea
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-gogs/" class="md-nav__link">
Gogs
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-mailman3/" class="md-nav__link">
Mailman 3
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-mailpiler_integration/" class="md-nav__link">
Mailpiler Integration
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-nextcloud/" class="md-nav__link">
Nextcloud
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-portainer/" class="md-nav__link">
Portainer
</a>
</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-roundcube/" class="md-nav__link">
Roundcube
</a>
</li>
</ul>
</nav>
</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="Inhaltsverzeichnis">
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
Inhaltsverzeichnis
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#referenzen" class="md-nav__link">
Referenzen
</a>
</li>
<li class="md-nav__item">
<a href="#reverse-dns-ihrer-ip-adresse" class="md-nav__link">
Reverse DNS Ihrer IP-Adresse
</a>
</li>
<li class="md-nav__item">
<a href="#die-minimale-dns-konfiguration" class="md-nav__link">
Die minimale DNS-Konfiguration
</a>
</li>
<li class="md-nav__item">
<a href="#dkim-spf-und-dmarc" class="md-nav__link">
DKIM, SPF und DMARC
</a>
</li>
<li class="md-nav__item">
<a href="#die-erweiterte-dns-konfiguration" class="md-nav__link">
Die erweiterte DNS-Konfiguration
</a>
</li>
<li class="md-nav__item">
<a href="#testen" class="md-nav__link">
Testen
</a>
</li>
<li class="md-nav__item">
<a href="#verschiedenes" class="md-nav__link">
Verschiedenes
</a>
<nav class="md-nav" aria-label="Verschiedenes">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#optionale-dmarc-statistiken" class="md-nav__link">
Optionale DMARC-Statistiken
</a>
</li>
<li class="md-nav__item">
<a href="#e-mail-test-fur-spf-dkim-und-dmarc" class="md-nav__link">
E-Mail-Test für SPF, DKIM und DMARC:
</a>
</li>
<li class="md-nav__item">
<a href="#fully-qualified-domain-name-fqdn" class="md-nav__link">
Fully Qualified Domain Name (FQDN)
</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/mailcow/mailcow-dockerized-docs/edit/master/docs/prerequisite/prerequisite-dns.de.md" title="Seite editieren" class="md-content__button md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
</a>
<h1>DNS Einstellungen</h1>
<p>Nachstehend finden Sie eine Liste von <strong>empfohlenen DNS-Einträgen</strong>. Einige sind für einen Mailserver obligatorisch (A, MX), andere werden empfohlen, um eine gute Reputation aufzubauen (TXT/SPF) oder für die automatische Konfiguration von Mailclients verwendet (SRV).</p>
<h2 id="referenzen">Referenzen<a class="headerlink" href="#referenzen" title="Permanent link">&para;</a></h2>
<ul>
<li>Ein guter Artikel, der alle relevanten Themen abdeckt:
<a href="https://www.rackaid.com/blog/email-dns-records">"3 DNS Records Every Email Marketer Must Know"</a></li>
<li>Ein weiterer guter Artikel, aber mit Zimbra als Beispielplattform:
<a href="https://wiki.zimbra.com/wiki/Best_Practices_on_Email_Protection:_SPF,_DKIM_and_DMARC">"Best Practices on Email Protection: SPF, DKIM and DMARC"</a></li>
<li>Eine ausführliche Diskussion über SPF, DKIM und DMARC:
<a href="https://www.skelleton.net/2015/03/21/how-to-eliminate-spam-and-protect-your-name-with-dmarc/">"Wie Sie Spam beseitigen und Ihren Namen mit DMARC schützen"</a></li>
<li>Ein ausführlicher Leitfaden zum Verständnis von DMARC:
<a href="https://seanthegeek.net/459/demystifying-dmarc/">"Entmystifizierung von DMARC: Ein Leitfaden zur Verhinderung von E-Mail-Spoofing"</a></li>
</ul>
<h2 id="reverse-dns-ihrer-ip-adresse">Reverse DNS Ihrer IP-Adresse<a class="headerlink" href="#reverse-dns-ihrer-ip-adresse" title="Permanent link">&para;</a></h2>
<p>Stellen Sie sicher, dass der PTR-Eintrag Ihrer IP-Adresse mit dem FQDN Ihres mailcow-Hosts übereinstimmt: <code>${MAILCOW_HOSTNAME}</code> <sup id="fnref:1"><a class="footnote-ref" href="#fn:1">1</a></sup>. Dieser Eintrag wird normalerweise bei dem Provider gesetzt, von dem Sie die IP-Adresse (Server) gemietet haben.</p>
<h2 id="die-minimale-dns-konfiguration">Die minimale DNS-Konfiguration<a class="headerlink" href="#die-minimale-dns-konfiguration" title="Permanent link">&para;</a></h2>
<p>Dieses Beispiel zeigt Ihnen eine Reihe von Einträgen für eine von mailcow verwaltete Domain. Jede Domain, die zu mailcow hinzugefügt wird, benötigt mindestens diesen Satz an Einträgen, um korrekt zu funktionieren.</p>
<div class="highlight"><pre><span></span><code># Name Typ Wert
mail IN A 1.2.3.4
autodiscover IN CNAME mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
autoconfig IN CNAME mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
@ IN MX 10 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
</code></pre></div>
<h2 id="dkim-spf-und-dmarc">DKIM, SPF und DMARC<a class="headerlink" href="#dkim-spf-und-dmarc" title="Permanent link">&para;</a></h2>
<p>Im folgenden Beispiel für eine DNS-Zonendatei wird ein einfacher <strong>SPF</strong> TXT-Eintrag verwendet, um nur DIESEM Server (dem MX) zu erlauben, E-Mails für Ihre Domäne zu senden. Jeder andere Server ist nicht zugelassen, kann es aber tun ("<code>~all</code>"). Weitere Informationen finden Sie im <a href="http://www.open-spf.org/">SPF-Projekt</a>.</p>
<div class="highlight"><pre><span></span><code># Name Typ Wert
@ IN TXT &quot;v=spf1 mx a -all&quot;
</code></pre></div>
<p>Es wird dringend empfohlen, einen <strong>DKIM</strong> TXT-Eintrag in Ihrer mailcow UI zu erstellen und den entsprechenden TXT-Eintrag in Ihren DNS-Einträgen zu setzen. Bitte lesen Sie <a href="http://www.opendkim.org">OpenDKIM</a> für weitere Informationen.</p>
<div class="highlight"><pre><span></span><code># Name Typ Wert
dkim._domainkey IN TXT &quot;v=DKIM1; k=rsa; t=s; s=email; p=...&quot;
</code></pre></div>
<p>Der letzte Schritt, um sich selbst und andere zu schützen, ist die Implementierung eines <strong>DMARC</strong> TXT-Datensatzes, zum Beispiel mit Hilfe des <a href="http://www.kitterman.com/dmarc/assistant.html">DMARC-Assistenten</a> (<a href="https://dmarcian.com/dmarc-inspector/google.com">check</a>).</p>
<div class="highlight"><pre><span></span><code># Name Typ Wert
_dmarc IN TXT &quot;v=DMARC1; p=reject; rua=mailto:mailauth-reports@example.org&quot;
</code></pre></div>
<h2 id="die-erweiterte-dns-konfiguration">Die erweiterte DNS-Konfiguration<a class="headerlink" href="#die-erweiterte-dns-konfiguration" title="Permanent link">&para;</a></h2>
<p><strong>SRV</strong>-Einträge geben den/die Server für ein bestimmtes Protokoll in Ihrer Domäne an. Wenn Sie einen Dienst explizit als nicht bereitgestellt ankündigen wollen, geben Sie "." als Zieladresse an (statt "mail.example.org."). Bitte beachten Sie <a href="https://tools.ietf.org/html/rfc2782">RFC 2782</a>.</p>
<div class="highlight"><pre><span></span><code># Name Typ Priorität Gewicht Port Wert
_autodiscover._tcp IN SRV 0 1 443 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_caldavs._tcp IN SRV 0 1 443 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_caldavs._tcp IN TXT &quot;path=/SOGo/dav/&quot;
_carddavs._tcp IN SRV 0 1 443 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_carddavs._tcp IN TXT &quot;path=/SOGo/dav/&quot;
_imap._tcp IN SRV 0 1 143 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_imaps._tcp IN SRV 0 1 993 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_pop3._tcp IN SRV 0 1 110 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_pop3s._tcp IN SRV 0 1 995 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_sieve._tcp IN SRV 0 1 4190 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_smtps._tcp IN SRV 0 1 465 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
_submission._tcp IN SRV 0 1 587 mail.example.org. (Ihr ${MAILCOW_HOSTNAME})
</code></pre></div>
<h2 id="testen">Testen<a class="headerlink" href="#testen" title="Permanent link">&para;</a></h2>
<p>Hier finden Sie einige Tools, mit denen Sie Ihre DNS-Konfiguration überprüfen können:</p>
<ul>
<li><a href="https://mxtoolbox.com/SuperTool.aspx">MX Toolbox</a> (DNS, SMTP, RBL)</li>
<li><a href="https://www.port25.com/dkim-wizard/">port25.com</a> (DKIM, SPF)</li>
<li><a href="https://www.mail-tester.com/">Mail-Tester</a> (DKIM, DMARC, SPF)</li>
<li><a href="https://www.dmarcanalyzer.com/spf/checker/">DMARC-Analysator</a> (DMARC, SPF)</li>
<li><a href="http://multirbl.valli.org/">MultiRBL.valli.org</a> (DNSBL, RBL, FCrDNS)</li>
</ul>
<h2 id="verschiedenes">Verschiedenes<a class="headerlink" href="#verschiedenes" title="Permanent link">&para;</a></h2>
<h3 id="optionale-dmarc-statistiken">Optionale DMARC-Statistiken<a class="headerlink" href="#optionale-dmarc-statistiken" title="Permanent link">&para;</a></h3>
<p>Wenn Sie an Statistiken interessiert sind, können Sie sich zusätzlich bei einem der vielen unten aufgeführten DMARC-Statistikdienste anmelden - oder Ihre eigene Statistik selbst hosten.</p>
<div class="admonition tipp">
<p class="admonition-title">Tipp</p>
</div>
<p>Es ist zu bedenken, dass wenn Sie DMARC-Statistik-Berichte an Ihren mailcow-Server anfordern und Ihr mailcow-Server nicht korrekt für den Empfang dieser Berichte konfiguriert ist, Sie möglicherweise keine genauen und vollständigen Ergebnisse erhalten. Bitte erwägen Sie die Verwendung einer alternativen E-Mail-Domain für den Empfang von DMARC-Berichten.</p>
<p>Es ist erwähnenswert, dass die folgenden Vorschläge keine umfassende Liste aller verfügbaren Dienste und Tools sind, sondern nur eine kleine Auswahl der vielen Möglichkeiten.</p>
<ul>
<li><a href="https://gmail.com/postmaster">Postmaster Tool</a></li>
<li><a href="https://github.com/domainaware/parsedmarc">parsedmarc</a> (selbst gehostet)</li>
<li><a href="https://fraudmarc.com/">Fraudmarc</a></li>
<li><a href="https://dmarc.postmarkapp.com">Postmark</a></li>
<li><a href="https://dmarcian.com/">Dmarcian</a></li>
</ul>
<div class="admonition tipp">
<p class="admonition-title">Tipp</p>
</div>
<p>Diese Dienste stellen Ihnen möglicherweise einen TXT-Eintrag zur Verfügung, den Sie in Ihre DNS-Einträge einfügen müssen, so wie es der Anbieter vorschreibt. Bitte stellen Sie sicher, dass Sie die Dokumentation des Anbieters des von Ihnen gewählten Dienstes lesen, da dieser Prozess variieren kann.</p>
<h3 id="e-mail-test-fur-spf-dkim-und-dmarc">E-Mail-Test für SPF, DKIM und DMARC:<a class="headerlink" href="#e-mail-test-fur-spf-dkim-und-dmarc" title="Permanent link">&para;</a></h3>
<p>Um eine rudimentäre E-Mail-Authentifizierungsprüfung durchzuführen, senden Sie eine E-Mail an <code>check-auth at verifier.port25.com</code> und warten Sie auf eine Antwort. Sie werden einen Bericht ähnlich dem folgenden finden:</p>
<div class="highlight"><pre><span></span><code>==========================================================
Zusammenfassung der Ergebnisse
==========================================================
SPF-Prüfung: bestanden
&quot;iprev&quot;-Prüfung: bestanden
DKIM-Prüfung: bestanden
DKIM-Prüfung: bestanden
SpamAssassin-Prüfung: ham
==========================================================
Einzelheiten:
==========================================================
....
</code></pre></div>
<p>Der vollständige Bericht enthält weitere technische Details.</p>
<h3 id="fully-qualified-domain-name-fqdn">Fully Qualified Domain Name (FQDN)<a class="headerlink" href="#fully-qualified-domain-name-fqdn" title="Permanent link">&para;</a></h3>
<div class="footnote">
<hr />
<ol>
<li id="fn:1">
<p>Ein <strong>Fully Qualified Domain Name</strong> (<strong>FQDN</strong>) ist der vollständige (absolute) Domänenname für einen bestimmten Computer oder Host im Internet. Der FQDN besteht aus mindestens drei Teilen, die durch einen Punkt getrennt sind: dem Hostnamen, dem Domänennamen und der Top Level Domain (kurz <strong>TLD</strong>). Im Beispiel <code>mx.mailcow.email</code> wäre der Hostname <code>mx</code>, der Domainname <code>mailcow</code> und die TLD <code>email</code>.&#160;<a class="footnote-backref" href="#fnref:1" title="Jump back to footnote 1 in the text">&#8617;</a></p>
</li>
</ol>
</div>
<hr>
<div class="md-source-file">
<small>
Letztes Update:
<span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-iso_datetime">2022-02-07 16:48:42</span>
</small>
</div>
</article>
</div>
</div>
<a href="#" class="md-top md-icon" data-md-component="top" data-md-state="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>
Zurück zum Seitenanfang
</a>
</main>
<footer class="md-footer">
<nav class="md-footer__inner md-grid" aria-label="Footer">
<a href="../prerequisite-system/" class="md-footer__link md-footer__link--prev" aria-label="Zurück: Systemvoraussetzungen" rel="prev">
<div class="md-footer__button md-icon">
<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>
</div>
<div class="md-footer__title">
<div class="md-ellipsis">
<span class="md-footer__direction">
Zurück
</span>
Systemvoraussetzungen
</div>
</div>
</a>
<a href="../../i_u_m/i_u_m_install/" class="md-footer__link md-footer__link--next" aria-label="Weiter: Installation" rel="next">
<div class="md-footer__title">
<div class="md-ellipsis">
<span class="md-footer__direction">
Weiter
</span>
Installation
</div>
</div>
<div class="md-footer__button md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11H4z"/></svg>
</div>
</a>
</nav>
<div class="md-footer-meta md-typeset">
<div class="md-footer-meta__inner md-grid">
<div class="md-copyright">
<div class="md-copyright__highlight">
Copyright &copy; 2022 Servercow Team & Community
</div>
Made with
<a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
Material for MkDocs
</a>
</div>
<div class="md-social">
<a href="https://mailcow.email" target="_blank" rel="noopener" title="mailcow.email" class="md-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Free 6.0.0 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="M512 256c0 141.4-114.6 256-256 256S0 397.4 0 256 114.6 0 256 0s256 114.6 256 256zM57.71 192.1l9.36 17.3a64.042 64.042 0 0 0 38.03 29.8l57 16.5c18.1 4.9 29.9 20.6 29.9 38.5v39.9c0 11 6.2 21 16 25 9.8 5.8 16 15.8 16 26.8v39c0 15.6 14.9 26.8 29.9 22.5 16.2-4.6 28.6-18.3 32.7-33.7l2.8-11.2c4.2-16.9 15.2-31.4 30.3-40.1l8.1-4.6c15-8.5 24.2-24.4 24.2-41.7v-8.2c0-12.8-5.1-25-14.1-34l-3.8-3.8c-9-9-21.3-15-34-15h-44c-10.2 0-21.2-2-30.9-7.5l-34.5-19.8c-4.3-2.4-7.6-6.4-9.1-11.1-3.2-9.6 1.1-20 10.1-24.6l6-2.9c6.6-3.3 14.2-3.9 20.4-1.5l24.1 7.7c8.1 2.7 17.1-.4 21.9-7.5 4.7-7.1 4.2-16.4-1.2-22.9l-13.6-16.2c-10-12-9.9-29.5.3-41.3l15.7-18.38c8.8-10.27 10.2-24.96 3.5-36.7l-2.4-4.16c-4.3-.17-6.9-.26-10.4-.26-92.9 0-171.6 60.9-198.29 144.1zm379.89-37.6L412 164.8c-15.7 6.3-23.8 23.7-18.5 39.8l16.9 50.7c3.5 10.4 12 18.3 22.6 21l29.2 7.2c1.2-9 1.8-18.2 1.8-27.5 0-36.8-9.6-71.4-26.4-101.5z"/></svg>
</a>
<a href="https://github.com/mailcow" target="_blank" rel="noopener" title="github.com" class="md-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 480 512"><!--! Font Awesome Free 6.0.0 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="M186.1 328.7c0 20.9-10.9 55.1-36.7 55.1s-36.7-34.2-36.7-55.1 10.9-55.1 36.7-55.1 36.7 34.2 36.7 55.1zM480 278.2c0 31.9-3.2 65.7-17.5 95-37.9 76.6-142.1 74.8-216.7 74.8-75.8 0-186.2 2.7-225.6-74.8-14.6-29-20.2-63.1-20.2-95 0-41.9 13.9-81.5 41.5-113.6-5.2-15.8-7.7-32.4-7.7-48.8 0-21.5 4.9-32.3 14.6-51.8 45.3 0 74.3 9 108.8 36 29-6.9 58.8-10 88.7-10 27 0 54.2 2.9 80.4 9.2 34-26.7 63-35.2 107.8-35.2 9.8 19.5 14.6 30.3 14.6 51.8 0 16.4-2.6 32.7-7.7 48.2 27.5 32.4 39 72.3 39 114.2zm-64.3 50.5c0-43.9-26.7-82.6-73.5-82.6-18.9 0-37 3.4-56 6-14.9 2.3-29.8 3.2-45.1 3.2-15.2 0-30.1-.9-45.1-3.2-18.7-2.6-37-6-56-6-46.8 0-73.5 38.7-73.5 82.6 0 87.8 80.4 101.3 150.4 101.3h48.2c70.3 0 150.6-13.4 150.6-101.3zm-82.6-55.1c-25.8 0-36.7 34.2-36.7 55.1s10.9 55.1 36.7 55.1 36.7-34.2 36.7-55.1-10.9-55.1-36.7-55.1z"/></svg>
</a>
<a href="https://twitter.com/mailcow_email" target="_blank" rel="noopener" title="twitter.com" class="md-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Free 6.0.0 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="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/></svg>
</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.top", "navigation.tracking"], "translations": {"clipboard.copy": "In Zwischenablage kopieren", "clipboard.copied": "In Zwischenablage kopiert", "search.config.lang": "de", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Suche", "search.result.placeholder": "Suchbegriff eingeben", "search.result.none": "Keine Suchergebnisse", "search.result.one": "1 Suchergebnis", "search.result.other": "# Suchergebnisse", "search.result.more.one": "1 weiteres Suchergebnis auf dieser Seite", "search.result.more.other": "# weitere Suchergebnisse auf dieser Seite", "search.result.term.missing": "Es fehlt", "select.version.title": "Version ausw\u00e4hlen"}, "search": "../../../assets/javascripts/workers/search.092fa1f6.min.js"}</script>
<script src="../../../assets/javascripts/bundle.5a9542cf.min.js"></script>
<script src="../../../assets/javascripts/client.js"></script>
</body>
</html>