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Mail server does not work. How to repair the mail server configuration

Article ID: 944, created on Oct 6, 2008, last review on May 13, 2015

  • Plesk


The Mail server does not work in a Parallels Plesk Panel (Plesk) server. How can I repair the mail server configuration?


Use the mchk utility to repair/rebuild the mail server configuration and restore the settings for all mailboxes created in Plesk.

For Linux:

 ~# /usr/local/psa/admin/sbin/mchk --help
 Restore settings for all mailboxes.
 Usage: /usr/local/psa/admin/sbin/mchk [OPTION]

   --without-spam   restore all settings except for SpamAssassin configuration
   --with-spam      restore all settings
   --spam-only      restore only SpamAssassin settings

 Usage example:

~# /usr/local/psa/admin/sbin/mchk --with-spam

For Windows:

Warning! Only settings that were applied to mailboxes through the Plesk interface or command-line utilities will be restored by mchk. Any custom configuration options, applied by other means (e.g. through your mail server's configuration console) will be lost, for more details please read What does mchk command do article.

 C:\>"%plesk_bin%\mchk" --help
 usage: mchk [options] ...

     --all             [--fix=all|local]
     --domain          --domain-name= [--fix=local]
     --domains         --domain-names=| [--via-file] [--fix=local]
     --all-domains     [--fix=local]

 Usage example:

 C:\>"%plesk_bin%\mchk" --all

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/usr/local/psa/var/log/maillogに下記メッセージが大量に出力されています。 warning: SASL authentication failure: realm changed: authentication aborted warning: unknown[]: SASL DIGEST-MD5 authentication failed: authentication failure too many errors after AUTH from unknown[] 下記サポートを確認しましたが、設定ファイルには問題無いようです。 # cat /usr/lib64/sasl2/smtpd.conf pwcheck_method: auxprop saslauthd auxprop_plugin: plesk saslauthd_path: /var/spool/postfix/private/plesk_saslauthd mech_list: DIGEST-MD5 CRAM-MD5 PLAIN LOGIN auto_transition: yes sql_engine: intentionally disabled log_level: 4 その他原因は御座いますでしょうか。

/var/qmail/bin/relaylock[17398]: /var/qmail/bin/relaylock: mail from


System error ./Maildir//tmp/: Is a directory

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