[Mailman-Developers] Pre-list filtering?

Any suggestions on filtering messages *before* they get to the list? I've got a list that doesent allow directly replies back to the list, so I want to block all messages with a subject starting "Re:", "RE:", etc.

Getting real tired of moderating/deleting 40-50 posts/day. 8-(

The only way I can think to do this would be by changing the list submission alias to point to a "fake user", who would have a .procmailrc to dump the appropriate messages, then re-inject the messages back into mailman. However, this seems very hackish.

Suggestions?

Bill

-- Bill Bradford mrbill@mrbill.net Austin, TX