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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)
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<li class="md-nav__item md-nav__item--nested">
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<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-Ăśberschreibungen
</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">
VertrauenswĂĽrdige Netzwerke hinzufĂĽgen
</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">
ĂśberprĂĽfung 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">
Ă–ffentliche 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 fĂĽr 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" >
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Docker
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Docker" data-md-level="2">
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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 ausfĂĽhren
</a>
</li>
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</li>
<li class="md-nav__item md-nav__item--nested">
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<span class="md-nav__icon md-icon"></span>
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Client-Konfiguration
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Ăśbersicht
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Android
</a>
</li>
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<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>
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<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>
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</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>
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</li>
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Inhaltsverzeichnis
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<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>
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<a href="#testen" class="md-nav__link">
Testen
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Verschiedenes
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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 fĂĽr 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>
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</li>
</ul>
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</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 ausfĂĽhrliche Diskussion ĂĽber 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 schĂĽtzen"</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 ĂĽbereinstimmt: <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 [SPF-Projekt] (<a href="http://www.open-spf.org/">http://www.open-spf.org/</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 schĂĽtzen, 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 [RFC 2782] (<a href="https://tools.ietf.org/html/rfc2782">https://tools.ietf.org/html/rfc2782</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 fĂĽr 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-PrĂĽfung: bestanden
&quot;iprev&quot;-PrĂĽfung: bestanden
DKIM-PrĂĽfung: bestanden
DKIM-PrĂĽfung: bestanden
SpamAssassin-PrĂĽfung: 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>
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Letztes Update:
<span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-iso_datetime">2022-01-29 18:47:33</span>
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