So, we had an errant program kick off about 15,000 emails to our users. I have our spam filters now blocking these on the edge until that gets resolved, but now I would like to clean our our users' mailboxes for them. Is there anyway with Exchange 2007 to remove all emails with certain text in the subject line? It would need to be a partial match because the subject changes slightly for each email.

I am trying to do this with Forefront's manual scan job + content filter, but it does not seem to like partial matches on the subject.