Re: co-chair judgment of consensus related to last call period of

Andrew Newton writes:

> On Sep 13, 2004, at 10:21 AM, Jonathan de Boyne Pollard wrote:
>
> > Even 3 years after the publication of RFC 2821, which obviated the
> > requirement that caused these to be done in the first place, many SMTP
> > Relay client softwares _still_ perform "ANY" DNS lookups instead of
> > separate "CNAME" and "MX" lookups (or, better yet in light of RFC 2821,
> > just "MX" lookups).
> I looked into this about a year ago and found that most MTAs did MX 
> then A,AAAA.
Generally, DNS servers will return a CNAME in response to a query for any RR 
for that hostname; and recursive resolvers will follow the CNAME chain.
The original client receives a reply that includes all the CNAMEs, and the 
MX RRs; provided that everything fits in the UDP packet.

pgpVQFGcT7jEZ.pgp
Description: PGP signature