invalid SOA record? or just unusual

Wed Oct 16 05:35:49 UTC 2013

In message <CAEiuvJAWWR=47rq14x1cGpQUCHhmjGoD4QqCHrv_a+auhHpL6w at mail.gmail.com>
, DV writes:
> Hello nanog,
> 
> Hopefully someone will have some input here on this DNS problem and
> why it is happening.
> I have just uncovered what seems to be a misconfiguration in an SOA
> record. This causes the domain to be unable to be resolved via a few
> of my DNS servers.
> It seems to work everywhere else I check it just fine, except for
> these two DNS servers.
> 
> One of these DNS servers is Win 2003 and the other is the standard
> latest RHEL6 bind 9.8.2.blah-blah so I don't think it would be a bug
> that affects both.
> They are both behind a NAT Firewall gateway which could also be
> causing problems by inspecting DNS traffic...

It's the NAT.  named doesn't care about the MNAME.

Mark

> Below is the SOA record in question for the site that cannot be
> resolved by our name servers.
> Particluarly the "." in place of the authoritative server which seems
> to be a mis-config and I am not sure the reason for it.
> 
> # dig soa rapportive.com
> 
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.4 <<>> @172.20.20.254
> soarapportive.com
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33703
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;rapportive.com.            IN    SOA
> 
> ;; ANSWER SECTION:rapportive.com.        3600    IN    SOA    .
> hostmaster.rapportive.com.
> 2013041614 3600 3600 3600 3600
> 
> ;; Query time: 54 msec
> ;; SERVER: 172.20.20.254#53(172.20.20.254)
> ;; WHEN: Tue Oct 15 16:49:57 2013
> ;; MSG SIZE  rcvd: 78
> 
> 
> Thanks for any help, I would be grateful for any suggestions at all...
>  Perhaps someone does the same thing with their SOA records?
> 
> DV
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org