On Thu, Jun 11, 2015 at 12:23:47PM +0000, Viktor Dukhovni wrote:
>
> > ogrj.ch. 3057 IN MX 10 smtasg01.abxsec.com.
> > ogrj.ch. 3057 IN MX 20 smtazh01.abxsec.com.
> > ogrj.ch. 3057 IN MX 110 smta2.abxsec.com.
> > ogrj.ch. 3057 IN MX 120 smtp1.seabix.com.
> > ogrj.ch. 3057 IN MX 130 smta4.abxsec.com.
> > ogrj.ch. 3057 IN MX 140 smta3.abxsec.com.
> > ogrj.ch. 3057 IN MX 510 mtas.abxsec.com.
> > ogrj.ch. 3057 IN MX 520 mtaz.abxsec.com.
> >
> > Jun 11 11:09:07 smtp2 postfix/smtp[19862]: warning: no MX host for
> > ogrj.ch has a valid address record
>
> There was a problem looking up the addresses of the above hosts,
> perhaps a nameserver was down, or a network connectivity problem
> prevented access.
>
> > Jun 11 11:09:07 smtp2 postfix/smtp[19862]: 2B25317FA69:
> > to=<removed_for_priv...@ogrj.ch>, relay=none, delay=0.18,
> > delays=0.15/0/0.03/0, dsn=5.4.4, status=bounced (Host or domain name
> > not found. Name service error for name=smtp1.seabix.com type=A: Host
> > not found)
>
> Postfix logged the problem for one of the MX hosts.
However, given that the message then bounced, the problem did not
manifest as a transient problem. For some reason at the time in
question the MX RRset authoritatively did not contain any hosts
that had an IP address and it looks like "smtp1.seabix.com" was
the last host by MX preferene.
--
Viktor.
