[exim] how to delete emails for particular domain

Hello,

I have a lot of mailman bounces destined for an admin address (my
error). I would like to delete them from queue (no need to send them).
How do I do that? I can delete a single message using -Mrm option but
can anyone share how to do that for all messages destined for one
recipient? We're talking about 4K emails in this instance.

Thanks!

Zbigniew Szalbot