Zimbra – deleting all email in queue by sender

As root user execute:

/opt/zimbra/postfix/sbin/postqueue -p | tail -n +2 | awk 'BEGIN { RS = "" } / sender@mail\.com/ { print $1 }' | tr -d '*' | /opt/zimbra/postfix/sbin/postsuper -d -

To Delete ALL Messages From Queue

/opt/zimbra/postfix/sbin/postsuper -d ALL

or

/opt/zimbra/common/sbin/postsupe -d ALL

Another way to do this:

mailq | awk '{print $1}' | postsuper -d -

To Delete ALL Messages From The Deferred Queue

/opt/zimbra/postfix/sbin/postsuper -d ALL deferred

To Delete ALL Messages From The Hold Queue

/opt/zimbra/postfix/sbin/postsuper -d ALL hold

There’s a nice Zimbra wiki page with detailed on cleaning up mail queues.

https://wiki.zimbra.com/wiki/Managing-The-Postfix-Queues