Here is the current available options for deleterecipients. The reason some of the commands aren't complete regular unix/linux machine is due to performance reasons. If the regular expression grabs too much information, it may be too pretty intensive.
You may still want to mention the feature request to your Sales engineer or representative.
example.com> help deleterecipients
deleterecipients "host" hostname
deleterecipients [options] "sender" email
deleterecipients "all"
Delete messages from the queue.
options:
--match-case
Cause matching of the username portion of the email address to match in
a case-sensitive fashion. By default, it is case-insensitive.
example.com> deleterecipients
Please select how you would like to delete messages:
1. By recipient host.
2. By Envelope From address.
3. All.
[1]>
Forum article on "findevent"
https://www.ironportnation.com/forums/viewtopic.php?t=417&highlight=findevent
Does anyone else think that the ability to use regular expressions with this command would be really helpful?
I sure do :)
Oh and to be able to pipe commands....
grep sort awk... etc :)