> (Please
trim inclusions from previous messages)
> > > RFC5321 in Section 5 [
http://tools.ietf.org/html/rfc5321#section-5]
> states:
> > >
> > > "The lookup first attempts to locate an MX record associated with the
> name. If
> > > a CNAME record is found, the
> > > resulting name is processed as if it were the initial name.*"*
>
> This means if the lookup for
www.example.com. returns CNAME
example.com,
> it
> will use the MX records under
example.com., not anything under the CNAME
> record
www.example.com.
>
>
That is not true at all. The previous paragraph states that it must
process the entire FQDN and not many any inferences as to the domain's
relationship with the FQDN.