On Wed, 17 Sep 2003 william@elan.net wrote:
>
> On Wed, 17 Sep 2003, Dean Anderson wrote:
>
> > Your mail client was making a false assumption. That is a bug in the
> > software. The mail client shouldn't be looking up domains. It should be
> > sending it to the relay. The relay then decides where to send the message.
> > The relay may be configured to route non-DNS domains, or do translations
> > to other systems. Your mail client can't know about that. If the relay
> > can't send the message somewhere, then it is supposed to bounce the
> > message. This decision is made by the relay, not the mail client.
> >
> > Your mail client has had a bug, for a long time.
^^^^^^
> Its not a bug. As many pointed out RFCs specify that mail servers should
^^^^^^^
I think you have pointed out that this is indeed the function of a mail
server, not a mail client. It is a bug.
> attempt to get MX record for domain first but if it fails should use "A"
> record if it exists. This behavior has existed for long time, but I think
> it came from way early on the internet when MXs were not used by everybody
> and mail was still being routed directly to the machine specified.
>