This seems like a simple problem, I can't figure out why it's not working. I have setup the filter: Filter Destination $message_body contains "A message that you sent contained no recipient addresses, and therefore no" Discard This is due to the forum sending updates to now no longer existing email accounts. For some reason the forum script sends the first email to the user, which bounces or something, and then this second email is created and sent to the admin for the site. So I create the filter above, but it's like it doesn't work at all. If I try to cut and paste the mail into the test box, and hit test, again, nothing seeems to happen. It shows: Filter Trace Results: and then empty, blank white space.