skip@pobox.com writes:
I still haven't figured out quite how to solve the problem. In theory we could use some other tool to perform the gateway operation. Instead of passing Usenet postings directly to Mailman it would mail them to python-list@python.org where they would get the spam filter treatment before Mailman sees them. I'm still thinking about the full ramifications of that.
Well, you want to watch out for greylisting. But running them through SpamBayes from Mailman should be trivial. You could also add (with a slight performance hit) a Handler that calls out to SpamBayes, SpamAssassin, etc, only when the MTA didn't already do that, or only when the message's from_usenet flag is set.
It might be easier to get Mailman's news-to-mail gateway to mail incoming Usenet messages to the list address instead of directly distributing them to the subscribers though.
That's probably not a great idea as ToUsenet comes pretty late in the pipeline.