Right you are, Perderabo! Thanks for catching that. That will teach me to rely on 5 year old neurons "Reply-To" is used much less frequently in headers than "Return-Path"

FYI: See these threads for more info:

http://www.unicom.com/pw/reply-to-harmful.html

http://cr.yp.to/proto/replyto.html

I'll check some wierd spam and post a follow-up........