NAT and Question Section Mismatch
marka at isc.org
Tue Apr 21 23:03:35 UTC 2020
> On 18 Apr 2020, at 06:26, John Wiles <john at iotis.org> wrote:
> Hello all,
> I am running into a problem that I think is caused by either a misconfiguration in Bind9, our Cisco NAT, or perhaps both.
> The scenario:
> We host our own sites locally, including internal and external DNS. The external dns servers are delegated for reverse lookups. The NAT is a static one.
> When I am on our internal network, I am able to query both servers and get the appropriate external ip address. However, when I try to do the same thing externally I get “Question section mismatch: got 188.8.131.52.in-addr.arpa/PTR/IN.”
> Some online tools will resolve the public ip to the appropriate hostname, but they will also show the ip as 10.1.1.6. Normally this wouldn’t be an issue except that I think it is the reason for some emails not being delivered.
> Any help or guidance is greatly appreciated.
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
> bind-users mailing list
> bind-users at lists.isc.org
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
More information about the bind-users