[Cialug] DNS Issues

[n.d]

have you tried to manually use different dns servers in nslookup???

nslookup google.com <other.dns.server>

??

i don't know if this would help any, but it might tell you if your 
resolv.conf is being read or not.

and maybe try traceroute <some.ip.on.the.internet> from it too

just to show packets can get to the internet, if not then you can tell 
whether or not its even able to reach the internet.

just a thought.

Stuart Thiessen wrote:

> Entries in the /etc/hosts file resolve fine (name or IP).  Anything 
> else does not.  I did not configure bind for this server because it 
> was working fine just having Qwest's DNS servers and then hosts to 
> cover the internal network.  nscd is up and running.  Am I missing a 
> program somewhere that works with resolv.conf?
>
> THanks,
>
> Stuart
>
> On Aug 23, 2005, at 16:32, n.d wrote:
>
>> can you resolve anything from it(the computer in question)??
>>
>>
>> Stuart Thiessen wrote:
>>
>>> I have been running the SUSE online updates periodically. I had no 
>>> problems until today. All of a sudden, email is holding up in the 
>>> queue and that was the clue that it was not able to use DNS to find 
>>> the servers to pass along the emails.  I did a ping and it pings to 
>>> our BSD firewall with no problem, but it cannot ping any name or ip 
>>> address outside the firewall.  All other computers on that network 
>>> are working just fine to get to the internet. Only this email server 
>>> is messed up.  I restarted nscd twice to no avail.  I reset 
>>> resolv.conf to point to my DNS servers instead of theirs, but that 
>>> didn't work. I tried pointing it to the firewall, but that didn't 
>>> work, then I just left it as it was originally (which was working 
>>> prior to today). I did restart nscd each time I changed resolv.conf.
>>>
>>> No updates have happened in about a week's time and the problem 
>>> cropped up today. So I don't think it is the result of an update.
>>>
>>> Any other suggestions?  What is the log for resolv.conf?
>>>
>>> Thanks,
>>>
>>> Stuart
>>>
>>> On Aug 23, 2005, at 16:04, albus wrote:
>>>
>>>> have you done an update? and if so have you checked iptables?
>>>>
>>>> joel
>>>>
>>>>
>>>> ----- Original Message ----- From: "Stuart Thiessen" 
>>>> <sthiessen at passitonservices.org>
>>>> To: "Central Users Group Iowa Linux" <cialug at cialug.org>
>>>> Sent: Tuesday, August 23, 2005 3:57 PM
>>>> Subject: [Cialug] DNS Issues
>>>>
>>>>
>>>>> Ok, I have encountered a very strange issue .... DNS on one server 
>>>>> was working fine using Qwest DNS servers and all of a sudden this 
>>>>> afternoon it stopped working. I checked resolv.conf and compared 
>>>>> it to our firewall server and it is the same. The firewall server 
>>>>> is doing just fine with DNS queries, but not this other server. It 
>>>>> handles email and webmail from behind the firewall.  It can ping 
>>>>> the firewall but it can't ping outside with name or IP.  My next 
>>>>> step is to check the firewall, but no one else behind the firewall 
>>>>> is complaining about being unable to get out.  This is preventing 
>>>>> the email from getting out.
>>>>> Any thoughts?
>>>>> Thanks,
>>>>> Stuart
>>>>> This is SUSE Linux 9.2. I ran the updates recently on it.  I'm a 
>>>>> little confused as to what is going on.
>>>>> _______________________________________________
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>>>>>
>>>>
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>>
>>
>>
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