> er, NO. SMTP has no dependence on what may or may > not exist in the DNS. Forcing SMTP to depend on DNS > is a huge mistake. And yes Virginia, I plan on removing > A rr's from my zones (eventually) You know, that's a very interesting point. One of more common configuration variations we see is to disable MX lookups and just use address records. (This is done for a variety of reasons, most often having to do with administrative control issues.) In an IPv6-only future world I see no reason why the need for this sort of configuration will vanish and I don't think having the RFCs say it shouldn't work is a good idea. I'm therefore changing my position from "no opinion" to "keep 2821bis the way it is". Ned _______________________________________________ IETF mailing list IETF@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf