Re: DNS lookup problems after upgrade from Etch to Lenny

[Jeffrey Cao <jcao.linux@gmail.com>]

On 2009-06-16, Stackpole, Chris <CStackpole@barbnet.com> wrote:
>> From: Adrian Levi [mailto:adrian.levi@gmail.com]
>> Sent: Tuesday, June 16, 2009 1:19 AM
>> Subject: Re: DNS lookup problems after upgrade from Etch to Lenny
>> 
>> >> didn't have it before and on another system running a fresh build
> of
>> >> Lenny running the exact same software handling a similar load and
> its
>> >> DNS ask rate is just as low as it was on this system running Etch.
>> >>
>> >> I am at a loss. I appreciate any help people can give.
>> 
>> Silly question, did you check resolv.conf?
>
> I did. It is the same as the other machines
>
> Search my.domain
> Nameserver ip.of.dns.1
> Nameserver ip.of.dns.2
>
Are you sure all those DNS servers work? especially for the first one.
Commented all others and leave only one to try one by one.

I met similar problem before. Some APPs just use the first DNS server.
If it failed, it will not try others. And some other APPs try others when
the first one failed.
So, maybe your first DNS does not work properly.

Jeffrey