[SunHELP] DNS working oddly

[Lara Matthews]

Hi Phil

Phil Stracchino wrote:
> Steve Sandau wrote:
> 
>>Lara Matthews wrote:
>>
>>
>>>Hi
>>>
>>>I wonder if someone can point me in the right direction.  My DNS server 
>>>is acting strangely.
>>>
>>>It can resolve itself and the other domains that it runs but does not 
>>>want to resolve anything outside.
> 
> [...]
> 
>>>bash-2.05# nslookup www.sun.com
>>>Server:  ns.accesscomputing.co.uk
>>>Address:  213.128.229.177
>>>
>>>*** ns.accesscomputing.co.uk can't find www.sun.com: Server failed
>>>
>>>Any thoughts why this might be happening?
>>>
>>
>>Are you behind a firewall? Is it allowing port 53 tsp and udp in and 
>>out? Do you have a current hints file? What does 'dig' with no 
>>parameters tell you? (It ought to come back with a list of root servers.)
> 
> 
> 
> This may be stupidly obvious, but it just bit me.  Is routing working
> correctly on the machine?  One of my nameservers just stopped performing
> external lookups, and I eventually found that something had overwritten
> /etc/defaultrouter and deleted the default route.  When I fixed those
> two, suddenly it all worked fine again.
> 
> 

Thanks, good idea but no dice.  Routing seems to working fine. I can 
ping the outside world I just can't do an nslookup on it :(.

Oh checked out the firewall too and it is allowing UDP and TCP on port 53.

Lara

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