[Mimedefang] sending relay has no MX record?

[Kevin A. McGrail]

> If the sending domain lacks both an MX and an A record, then Sendmail
> will not accpet mail from that domain unless you've enabled
> FEATURE(`accept_unresolvable_domains')
>
> AFAIK, no modern UNIX systems come with that feature enabled by default.

Exactly.  My point was that an A record is all that is needed.  You don't
HAVE to have an A and an MX record to be RFC compliant AFAIK.  Testing to
see if someone has an MX record and an A record is not a valid test of a
legit mail server.

Regards,
KAM