[Cialug] DNS Issues

albus albus at iowaconnect.com
Tue Aug 23 18:14:19 CDT 2005


stupid question. have you checked the obvious.
NIC Card, CABLES have you reset your switch
some of those things.

----- Original Message ----- 
From: "Stuart Thiessen" <sthiessen at passitonservices.org>
To: "Central Iowa Linux Users Group" <cialug at cialug.org>
Sent: Tuesday, August 23, 2005 6:10 PM
Subject: Re: [Cialug] DNS Issues


> It looks like this with appropriate dummy values.  The firewall only 
> has the nameserver entries but not the domain entry in its resolv.conf.
> 
> domain mydomain.com
> nameserver 207.xxx.xxx.xxx
> nameserver 204.xxx.xxx.xxx
> 
> Thanks,
> 
> Stuart
> 
> On Aug 23, 2005, at 17:59, David Champion wrote:
> 
>> What does your /etc/resolv.conf look like?
>>
>> -dc
>>
>> Stuart Thiessen wrote:
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>>> Turned off nscd and really nothing changed much (except it seems to 
>>> read /etc/hosts faster). It doesn't make sense that it is the 
>>> firewall on the email server or the firewall for our network.
>>> Hmmm ..... ANy other ideas?
>>> Stuart
>>> On Aug 23, 2005, at 17:16, Stuart Thiessen wrote:
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>>>>
>>>> I ran route -n  and it shows that it is pointing to the firewall as 
>>>> the gateway.
>>>>
>>>> nscd has been running all along.  I hadn't encountered that program 
>>>> before so I just left it running.  I know enough to be dangerous but 
>>>> not enough to be an expert yet.  :)
>>>>
>>>> Hmmm .... I can stop nscd and see if that does anything.  route 
>>>> seems good.  I'm not sure what the problem can be.  I'd suspect our 
>>>> firewall, but no other computer on the network is having problems.  
>>>> So ... Hmmm.
>>>>
>>>> Thanks,
>>>>
>>>> Stuart
>>>>
>>>> On Aug 23, 2005, at 17:02, Paul Gray wrote:
>>>>
>>>>> On Tue, Aug 23, 2005 at 04:48:34PM -0500, David Champion wrote:
>>>>>
>>>>>> Are you sure it's not a problem with ncsd? The Debian package info 
>>>>>> for
>>>>>> that says:
>>>>>>
>>>>>> "A daemon which handles passwd, group and host lookups for running
>>>>>> programs and caches the results for the next query. You should 
>>>>>> install
>>>>>> this package only if you use slow Services like LDAP, NIS or NIS+"
>>>>>>
>>>>>
>>>>> If nscd is running, you can stop it with "/etc/init.d/nscd stop"
>>>>> or invalidate the hosts with nscd -i hosts
>>>>>
>>>>> But, it sounds like the root of your problem isn't resolv.conf, but 
>>>>> rather the
>>>>> default route.
>>>>>
>>>>> What does "route -n" show?  does it point to the firewall as the 
>>>>> default
>>>>> gateway?
>>>>>
>>>>> -- 
>>>>> Paul Gray                                         -o)
>>>>> 323 Wright Hall                                   /\\
>>>>> University of Northern Iowa                      _\_V
>>>>> Message void if penguin violated ...  Don't mess with the penguin
>>>>> _______________________________________________
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>>>>> http://cialug.org/mailman/listinfo/cialug
>>>>
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