On Mon, 1 Apr 2002 18:06:51 -0600 dman <dsh8290@???> wrote:
> You can't reply to that message (or deliver a bounce) because that
> domain doesn't exist. Ok, so when delivering you try to fall back to
> the A record, but there SHOULD be an MX.
i'm speaking from memory here, and not from direct reference to an RFC, but
i'm pretty sure that delivering to the IP in an A record when no MX exists
is still officially sanctioned. therefore, a site which has an A but no MX,
and accepts mail at that IP, is standards conforming.
so yes, it really should have an MX, but i don't think it has to.
you can of course reject mail on any basis you like, but in this particular
case, you're standing on very soft technical ground.
richard
--
Richard Welty
rwelty@??? Averill Park Networking
rwelty@??? Unix, Linux, IP Network Engineering, Security
rwelty@??? 518-573-7592
