On Thu, 27 Feb 2014 07:47:14 -0500, woodchucker
Thunderbird has disabled filtering on newsgroups a while back. Not sure
why, but my filters no longer work.

Found this. Don't know if it will help.
https://groups.google.com/forum/#!to...rd/aHmCMFfUpzg

Got to be honest. If a newsreader of any type doesn't have filtering,
then I'd be gone for the hills.