Mail is deferred: delivery temporarily suspended

Mail is Deferred: Delivery temporarily suspended: connect to[]:10024: Connection refused

Applies to:

  • Plesk for Linux/Unix


  • There are many emails in mail queue
  • In /var/log/maillog the following can be found:
 servername postfix/error[15666]: 8875414912DE: [email protected], relay=none, delay=0.16, 
 delays=0.12/0/0/0.04, dsn=4.4.1, status=deferred (delivery temporarily suspended: 
 connect to[]:10024: Connection refused)


Milter service in a postfix either is not started or not working properly.


In /etc/postfix/ find a service configured on port in the error message using the following command:

 # grep 10024 /etc/postfix/ /etc/postfix/ = amavis:[]:10024

If output is identical consider to analyze and resolve the issue with content filter amavis.

As a temporary workaround amawis can be disabled by commenting the following lines in /etc/postfix/

 #content_filter = smtp-amavis:[]:10024
 #receive_override_options = no_address_mappings  # <- it's ok if you don't have this line

Then comment out below line in /etc/postfix/,

 -o content_filter=smtp-amavis:[]:10026

Restart postfix:

 # service postfix restart




Sushil Deshmukh

Sushil Deshmukh

Digital Marketing at ESDS
Intrigued by latest technology sushil is an avid technophile. writing about latest trends in technologies is what gives him pleasure.
Sushil Deshmukh

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