[dns-operations] Can MX be working with CNAME?
dot at dotat.at
Mon Oct 21 15:16:56 UTC 2013
Jo Rhett <jrhett at netconsonance.com> wrote:
> Tony, you seem to be confused about how dns and mail work. Fallback to
> host deliver when an MX doesn't exist was poor behavior in the original
> RFC, and has been fully deprecated behavior for more than 20 years now.
You might like to review section 5 of RFC 2821 and RFC 5321, and if you
have the time you could read the discussions of this feature in the
ietf-smtp mailing list archives.
f.anthony.n.finch <dot at dotat.at> http://dotat.at/
Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at
first. Rough, becoming slight or moderate. Showers, rain at first.
Moderate or good, occasionally poor at first.
More information about the dns-operations