Unable to query the nameserver

[Andrey G. Sergeev (AKA Andris)]

Mon, 4 Oct 2010 23:41:13 +0200 Dotan Cohen wrote:

>> You might be blocking 53/udp and (or) 53/tcp port. Try to query
>> your problematic server from some other location rather than the
>> site this server is installed on.
>>
> 
> The ports aren't blocked as another site (example.eu) hosted on
> the 1.1.1.1 server works fine. The working site has both
> nameservers pointed to that same server (on two different IP
> addresses on eth0 and etho0:0). Only the example.de site which has
> one nameserver on the 1.1.1.1 machine and the second nameserver on
> 1.1.2.2 is giving me a headache.

It may be the zone transfer issue - the DENIC might want to trasfer the
zone example.de and your server at 1.1.1.1 has been configured to deny
these attempts originated from the unknown IPs. Grep your BIND log for
any error messages related to 'example.de'.


-- 

Yours sincerely,

Andrey G. Sergeev (AKA Andris)     http://www.andris.name/