Marvin Renich:
> First, why would the DNS query correctly give the ipv4 address on Mar
> 10, but then fail saying it could not find an ipv6 entry on Mar 21? I
> can find no configuration change or program version change that would
> explain this.
Previously, the A lookup succeeded. Now, the the A lookup fails,
then Postfix tries AAAA, and that fails, too. Postfix only logs the
last DNS error.
So the real question is why did the A lookup fail. You can avoid
the IPv6 lookup by configuring inet_protocols in main.cf.
Wietse
