Unable to send/receive mail with SMTP Error: Milter service unix:/ctmilter/ctmilter.sock: No such file or directory

Created:

2016-11-16 13:24:18 UTC

Modified:

2017-08-16 18:35:48 UTC

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Unable to send/receive mail with SMTP Error: Milter service unix:/ctmilter/ctmilter.sock: No such file or directory

Applicable to:

  • Plesk 11.x for Linux
  • Plesk 12.0 for Linux

Symptoms

  1. Unable to send an email, the following error appears in /usr/local/psa/var/log/maillog :

    Milter service unix:/ctmilter/ctmilter.sock: No such file or directory
  2. In Home > Domains > example.com > DNS Settings MX record points to external mail server.

Cause

Misconfiguration in DNS settings.

Resolution

Remove MX record from domain's DNS settings that points to external mail server in Home > Domains > example.com > DNS Settings . MX record should look like:

Host               Record      Value
example.com. MX (10) mail.example.com.

Additional information

#214526825 Unable to send an email: warning: connect to Milter service unix:/var/spool/postfix/ctmilter/ctmilter.sock: No such file or directory

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