[Cialug] DNS Issues

[n.d]

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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