Once the MTA authors adopt any new standard, the spammers will. Look at SPF. Their income *REQUIRES* adaptability to stay ahead (or at least) even in the cat and maouse game of filtering.
I'm not sure SPF is a good example. While I'm sure *some* spammers actually thought in terms of "Hey, if I keep using fake addresses, some of them will have SPF records and get me blocked" or even "Whoa, these people are going to start blocking mail without SPF, I'd better add that!" I suspect most of it was due to the misconception that an SPF pass will get you through a filter.
I'm not saying the motivation won't be there, just that it won't be very strong when there's a guaranteed multi-year transition period in which the old standard will still get the mail through.
-- Kelson Vibber SpeedGate Communications <www.speed.net> _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
