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<a href="../../backup_restore/b_n_r-backup/" class="md-nav__link">
Sicherung
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<a href="../../backup_restore/b_n_r-restore/" class="md-nav__link">
Wiederherstellung
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</ul>
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</li>
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<a href="../../backup_restore/b_n_r-coldstandby/" class="md-nav__link">
Cold-standby (rollende Sicherung)
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_3" type="checkbox" id="__nav_7_3" >
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<a href="../../backup_restore/b_n_r-backup_restore-maildir/" class="md-nav__link">
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Interne mailcow Sicherungen
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<nav class="md-nav" aria-label="Interne mailcow Sicherungen" data-md-level="2">
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Interne mailcow Sicherungen
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<a href="../../backup_restore/b_n_r-accidental_deletion/" class="md-nav__link">
Versehentlich gelöschte Daten wiederherstellen
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mailcow UI
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="mailcow UI" data-md-level="2">
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-bl_wl/" class="md-nav__link">
Blacklist / Whitelist
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</li>
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<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-netfilter/" class="md-nav__link">
Netfilter
</a>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-pushover/" class="md-nav__link">
Pushover
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</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-spamfilter/" class="md-nav__link">
Spamfilter
</a>
</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-sub_addressing/" class="md-nav__link">
Sub-Adressierung
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</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-tags/" class="md-nav__link">
Tags (für Domains und Mailboxen)
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</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-spamalias/" class="md-nav__link">
Temporäre E-Mail-Aliase
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</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-tfa/" class="md-nav__link">
Zwei-Faktoren-Authentifizierung
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</li>
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<a href="../../manual-guides/mailcow-UI/u_e-mailcow_ui-fido/" class="md-nav__link">
WebAuthn / FIDO2
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Postfix
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Postfix
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<a href="../../manual-guides/Postfix/u_e-postfix-trust_networks/" class="md-nav__link">
Vertrauenswürdige Netzwerke hinzufügen
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<a href="../../manual-guides/Postfix/u_e-postfix-custom_transport/" class="md-nav__link">
Benutzerdefinierte Transportmaps
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<a href="../../manual-guides/Postfix/u_e-postfix-extra_cf/" class="md-nav__link">
main.cf anpassen/erweitern
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<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
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</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>
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_3" type="checkbox" id="__nav_8_3" >
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Unbound
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</label>
<nav class="md-nav" aria-label="Unbound" data-md-level="2">
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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
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</li>
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<li class="md-nav__item md-nav__item--nested">
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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">
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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" >
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Nginx
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Nginx" data-md-level="2">
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Nginx
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<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
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<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
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<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
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</li>
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</nav>
</li>
<li class="md-nav__item">
<a href="../../manual-guides/Redis/u_e-redis/" class="md-nav__link">
Redis
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</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 md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_9" type="checkbox" id="__nav_8_9" >
<label class="md-nav__link" for="__nav_8_9">
ClamAV
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="ClamAV" data-md-level="2">
<label class="md-nav__title" for="__nav_8_9">
<span class="md-nav__icon md-icon"></span>
ClamAV
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../manual-guides/ClamAV/u_e-clamav-whitelist/" class="md-nav__link">
Whitelist
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</li>
<li class="md-nav__item">
<a href="../../manual-guides/ClamAV/u_e-clamav-additional_dbs/" class="md-nav__link">
Weitere Datenbanken
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<a href="../../manual-guides/SOGo/u_e-sogo/" class="md-nav__link">
SOGo
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8_11" type="checkbox" id="__nav_8_11" >
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Docker
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<nav class="md-nav" aria-label="Docker" data-md-level="2">
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Docker
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<li class="md-nav__item">
<a href="../../manual-guides/Docker/u_e-docker-cust_dockerfiles/" class="md-nav__link">
Dockerfiles anpassen
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</li>
<li class="md-nav__item">
<a href="../../manual-guides/u_e-why_unbound/" class="md-nav__link">
Warum unbound?
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<li class="md-nav__item">
<a href="../../manual-guides/u_e-autodiscover_config/" class="md-nav__link">
Autodiscover / Autoconfig
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<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
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Client-Konfiguration
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</label>
<nav class="md-nav" aria-label="Client-Konfiguration" data-md-level="1">
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Client-Konfiguration
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<li class="md-nav__item">
<a href="../../client/client/" class="md-nav__link">
Ãœbersicht
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Android
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<li class="md-nav__item">
<a href="../../client/client-apple/" class="md-nav__link">
Apple macOS / iOS
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<a href="../../client/client-emclient/" class="md-nav__link">
eM Client
</a>
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KDE Kontact
</a>
</li>
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Microsoft Outlook
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</li>
<li class="md-nav__item">
<a href="../../client/client-thunderbird/" class="md-nav__link">
Mozilla Thunderbird
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</li>
<li class="md-nav__item">
<a href="../../client/client-windows/" class="md-nav__link">
Windows Mail
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</li>
<li class="md-nav__item">
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Manuelle Konfiguration
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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>
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<a href="../../third_party/third_party-exchange_onprem/" class="md-nav__link">
Exchange Hybrid Setup
</a>
</li>
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<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>
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<a href="../../third_party/third_party-mailpiler_integration/" class="md-nav__link">
Mailpiler Integration
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</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-nextcloud/" class="md-nav__link">
Nextcloud
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</li>
<li class="md-nav__item">
<a href="../../third_party/third_party-portainer/" class="md-nav__link">
Portainer
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</li>
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<a href="../../third_party/third_party-roundcube/" class="md-nav__link">
Roundcube
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<a href="#mail-kommt-in-einer-schleife-zu-sich-selbst-zuruck" class="md-nav__link">
Mail kommt in einer Schleife zu sich selbst zurück.
</a>
</li>
<li class="md-nav__item">
<a href="#ich-kann-mails-empfangen-aber-nicht-senden" class="md-nav__link">
Ich kann Mails empfangen, aber nicht senden
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</li>
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<a href="#meine-mails-werden-als-spam-identifiziert" class="md-nav__link">
Meine Mails werden als Spam identifiziert
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<a href="#docker-compose-wirft-seltsame-fehler-aus" class="md-nav__link">
docker-compose wirft seltsame Fehler aus.
</a>
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Container XY ist ungesund
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Adresse bereits in Gebrauch
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<a href="#xyz-kann-keine-verbindung-zu" class="md-nav__link">
XYZ kann keine Verbindung zu ...
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<a href="#inotify-instanz-limit-uberschritten-fur-benutzer-5000-uid-vmail-siehe-453" class="md-nav__link">
Inotify-Instanz-Limit überschritten für Benutzer 5000 (UID vmail) (siehe #453).
</a>
</li>
<li class="md-nav__item">
<a href="#dovecot-startet-standig-neu-siehe-2672" class="md-nav__link">
Dovecot startet ständig neu (siehe #2672).
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</div>
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<h1>Häufig auftretende Probleme</h1>
<p>Hier sind häufige Probleme und mögliche Lösungen:</p>
<h2 id="mail-kommt-in-einer-schleife-zu-sich-selbst-zuruck">Mail kommt in einer Schleife zu sich selbst zurück.<a class="headerlink" href="#mail-kommt-in-einer-schleife-zu-sich-selbst-zuruck" title="Permanent link">&para;</a></h2>
<p>Bitte überprüfen Sie in Ihrer mailcow UI, ob Sie die Domain als <strong>Backup MX</strong> eingestellt haben:
<img alt="Überprüfen Sie Ihre MX-Backup-Einstellungen" src="../../assets/images/troubleshooting/mailcow-backupmx.png" /></p>
<h2 id="ich-kann-mails-empfangen-aber-nicht-senden">Ich kann Mails empfangen, aber nicht senden<a class="headerlink" href="#ich-kann-mails-empfangen-aber-nicht-senden" title="Permanent link">&para;</a></h2>
<p>Es gibt viele Gründe, die Sie daran hindern können, Mails zu versenden:</p>
<ul>
<li>Prüfen Sie, ob Ihre IP-Adresse auf einer schwarzen Liste steht. Sie können <a href="http://www.dnsbl.info/">dnsbl.info</a> oder einen ähnlichen Dienst verwenden, um Ihre IP-Adresse zu überprüfen.</li>
<li>Es gibt einige ISP-Router, die Mail-Ports für nicht auf der Blacklist stehende Domains blockieren. Bitte überprüfen Sie, ob Sie Ihren Server über die Ports <code>465</code> oder <code>587</code> erreichen können:</li>
</ul>
<div class="highlight"><pre><span></span><code># telnet 74.125.133.27 465
Versucht 74.125.133.27...
Verbunden mit 74.125.133.27.
Escape-Zeichen ist &#39;^]&#39;.
</code></pre></div>
<h2 id="meine-mails-werden-als-spam-identifiziert">Meine Mails werden als Spam identifiziert<a class="headerlink" href="#meine-mails-werden-als-spam-identifiziert" title="Permanent link">&para;</a></h2>
<p>Bitte lesen Sie unsere <a href="../../prerequisite/prerequisite-dns/">DNS-Konfiguration</a> Anleitung.</p>
<h2 id="docker-compose-wirft-seltsame-fehler-aus">docker-compose wirft seltsame Fehler aus.<a class="headerlink" href="#docker-compose-wirft-seltsame-fehler-aus" title="Permanent link">&para;</a></h2>
<p>... wie:</p>
<ul>
<li><code>ERROR: Ungültiges Interpolationsformat ...</code></li>
<li><code>AttributeError: 'NoneType' Objekt hat kein Attribut 'keys'</code>.</li>
<li>ERROR: In der Datei './docker-compose.yml' hat der Dienst 'version' keine Konfigurationsoptionen.</li>
</ul>
<p>Wenn Sie eine oder ähnliche Meldungen erhalten, während Sie versuchen, mailcow: dockerized auszuführen, überprüfen Sie bitte, ob Sie die <strong>aktuellste</strong> Version von <strong>Docker</strong> und <strong>docker-compose</strong> haben.</p>
<h2 id="container-xy-ist-ungesund">Container XY ist ungesund<a class="headerlink" href="#container-xy-ist-ungesund" title="Permanent link">&para;</a></h2>
<p>Dieser Fehler versucht Ihnen mitzuteilen, dass eine der (Gesundheits-)Bedingungen für einen bestimmten Container nicht erfüllt ist. Daher kann er nicht gestartet werden. Dies kann verschiedene Gründe haben, der häufigste ist ein aktualisierter Git-Klon, aber ein altes Docker-Image oder umgekehrt.</p>
<p>Auch eine falsch konfigurierte Firewall kann einen solchen Fehler verursachen. Die Container müssen in der Lage sein, über das Netzwerk 172.22.1.1/24 miteinander zu kommunizieren.</p>
<p>Es könnte auch eine falsch verknüpfte Datei sein (z. B. ein SSL-Zertifikat), die den Start eines wichtigen Containers (nginx) verhindert. Prüfen Sie daher immer Ihre Protokolle, um herauszufinden, woher das Problem kommt.</p>
<h2 id="adresse-bereits-in-gebrauch">Adresse bereits in Gebrauch<a class="headerlink" href="#adresse-bereits-in-gebrauch" title="Permanent link">&para;</a></h2>
<p>Wenn Sie eine Fehlermeldung erhalten wie:</p>
<div class="highlight"><pre><span></span><code>ERROR: for postfix-mailcow Cannot start service postfix-mailcow: driver failed programming external connectivity on endpoint mailcowdockerized_postfix-mailcow_1: Error starting userland proxy: listen tcp 0.0.0:25: bind: address already in use
</code></pre></div>
<p>während Sie versuchen, mailcow: dockerized zu starten / zu installieren, stellen Sie sicher, dass Sie unseren Abschnitt über <a href="../prerequisite/prerequisite-system.de.md/#firewall-ports">prerequisites</a> befolgt haben.</p>
<h2 id="xyz-kann-keine-verbindung-zu">XYZ kann keine Verbindung zu ...<a class="headerlink" href="#xyz-kann-keine-verbindung-zu" title="Permanent link">&para;</a></h2>
<p>Bitte überprüfen Sie Ihre lokale Firewall!
Docker und iptables-basierte Firewalls erstellen manchmal widersprüchliche Regeln. Deaktivieren Sie daher die Firewall auf Ihrem Host, um festzustellen, ob Ihre Verbindungsprobleme durch solche Konflikte verursacht werden. Wenn dies der Fall ist, müssen Sie manuell entsprechende Regeln in Ihrer Host-Firewall erstellen, um die erforderlichen Verbindungen zuzulassen.</p>
<p>Wenn Sie Verbindungsprobleme von zu Hause aus haben, überprüfen Sie bitte auch die Firewall Ihres ISP-Routers, da einige von ihnen den E-Mail-Verkehr über die Ports <em>SMTP</em> (587) oder <em>SMTPS</em> (465) blockieren. Es könnte auch sein, dass Ihr ISP die Ports für <em>SUBMISSION</em> (25) blockiert.</p>
<p>Während Linux-Benutzer aus einer Vielzahl von Tools<sup id="fnref:1"><a class="footnote-ref" href="#fn:1">1</a></sup> wählen können, um zu überprüfen, ob ein Port offen ist, steht Windows-Benutzern standardmäßig nur der PowerShell-Befehl <code>Test-NetConnection -ComputerName host -Port port</code> zur Verfügung.</p>
<p>Um Telnet auf einem Windows nach Vista zu aktivieren, lesen Sie bitte diese <a href="https://social.technet.microsoft.com/wiki/contents/articles/910.windows-7-enabling-telnet-client.aspx">Anleitung</a> oder geben Sie den folgenden Befehl in einem Terminal <strong>mit Administratorrechten</strong> ein:</p>
<div class="highlight"><pre><span></span><code>dism /online /Enable-Feature /FeatureName:TelnetClient
</code></pre></div>
<h2 id="inotify-instanz-limit-uberschritten-fur-benutzer-5000-uid-vmail-siehe-453">Inotify-Instanz-Limit überschritten für Benutzer 5000 (UID vmail) (<a href="https://github.com/mailcow/mailcow-dockerized/issues/453#issuecomment-314711232">siehe #453</a>).<a class="headerlink" href="#inotify-instanz-limit-uberschritten-fur-benutzer-5000-uid-vmail-siehe-453" title="Permanent link">&para;</a></h2>
<p>Docker-Container verwenden die inotify-Limits von Docker-Hosts. Wenn Sie sie auf Ihrem Docker-Host setzen, werden sie an den Container weitergegeben.</p>
<h2 id="dovecot-startet-standig-neu-siehe-2672">Dovecot startet ständig neu (siehe <a href="https://github.com/mailcow/mailcow-dockerized/issues/2672">#2672</a>).<a class="headerlink" href="#dovecot-startet-standig-neu-siehe-2672" title="Permanent link">&para;</a></h2>
<p>Stellen Sie sicher, dass Sie mindestens die folgenden Dateien in <code>data/assets/ssl</code> haben:</p>
<div class="highlight"><pre><span></span><code>cert.pem
dhparams.pem
key.pem
</code></pre></div>
<p>Wenn <code>dhparams.pem</code> fehlt, können Sie es mit Bash</p>
<div class="highlight"><pre><span></span><code>openssl dhparam -out data/assets/ssl/dhparams.pem <span class="m">4096</span>
</code></pre></div>
<div class="footnote">
<hr />
<ol>
<li id="fn:1">
<p><a href="https://linux.die.net/man/1/nc">netcat</a>, <a href="https://linux.die.net/man/1/nmap">nmap</a>, <a href="https://wiki.openssl.org/index.php/Manual:S_client(1)">openssl</a>, [telnet](<a href="https://linux">https://linux</a>&#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">2022-06-23 15:17:00</span>
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