> > 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
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