[SunHELP] DNS working oddly
lara.matthews at accesscomputing.co.uk
Tue Jul 12 09:31:34 CDT 2005
Phil Stracchino wrote:
> Steve Sandau wrote:
>>Lara Matthews wrote:
>>>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
>>>*** 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.
[demime 1.01d removed an attachment of type application/x-pkcs7-signature which had a name of smime.p7s]
More information about the SunHELP