List Mail User wrote:
        You also have the problem of dealing with IP literals, and users
running dynamic DNS which still has stale DNS data (so the response should
be a 4xx code not a 5xx code, if you do something like this).

I think anyone who is running a mail server on a dynamic IP has to expect problems, and kind of deserves what they get. I say this as someone who does run one that way. ;)


As for IP literals, even though the RFC requires them a lot of MTAs don't accept them anymore.

Reply via email to