> > In an IETF that believes the potential recursion of URNs and > > NAPTR records is reasonable, it is really hard for me to get > > excited about that one possible extra lookup. YMMD, of course. I can't get excited about this either. > Doug's issue, which sparked off this latest debate, would > be addressed by codifying "MX 0 .". This would allow hosts > to say that do not accept email and any email (MAIL FROM) > claiming to come from such a domain to be dropped in the > SMTP session. OTOH, I think standardizing this convention makes all sorts of sense, but not, of course, in 2821bis. Ned _______________________________________________ IETF mailing list IETF@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf