On Sun, Mar 30, 2008 at 11:53:37PM -0400, John C Klensin wrote: > > It was obvious 20+ years ago that MX processing was broken > > as there was no way to say "I don't want email". > > First, it may have been obvious to you, but it wasn't obvious to > many of us. In the general case, it still isn't. But you > stated the situation exactly correctly. "MX 0 ." means "I > don't want email". "SRV 0 0 ." doesn't really indicate "no > service", it indicates "please do look for that service here". actually, it means the DNS admin doesn't want SMTP connections set to the indicated node. > While it is better than interpreting the lack of a bit in a WKS > record as "no service", it is still nothing more than an attempt > to use the DNS to say "please don't try a mail connection to > this domain". right. --bill Opinions expressed may not even be mine by the time you read them, and certainly don't reflect those of any other entity (legal or otherwise). _______________________________________________ IETF mailing list IETF@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf