Postfix: Delete from queue by header content
Normally you can use mailq to delete by sender or receipient, but postfix doesn't really have any tools to delete based on any other content in the email. Following is a quick and nasty one liner that I came up with to help a customer out. One of the websites he hosted had been compromised and was being used to send out spam. The only thing the emails had in common was a header. X-PHP-Originating-Script: 33:index2Xv6C.php for i in $(mailq | tail -n +2 | awk 'BEGIN { RS = "" } $1 ~ /^[[:alnum:]]/ { print $1 } ' | tr -d '*!' ); do if [[ $(postcat -hq "$i" | grep index2Xv6C.php) ]] ; then postsuper -d $i; fi; done It wasn't particularly quick but it didn't cause much load either.