Duplicating queries??

Daniel Morgan daniel.morgan at riotm.co.uk
Sat Feb 20 17:54:30 UTC 2010


On Sat, 2010-02-20 at 11:38 -0500, Barry Margolin wrote:
> In article <mailman.486.1266649694.21153.bind-users at lists.isc.org>,
>  Daniel Morgan <daniel.morgan at riotm.co.uk> wrote:
> 
> > I have a couple of BIND servers that I have inherited.  I'm getting some
> > upstream  complaints that one of them is issuing duplicate queries on
> > occasions - probably about a dozen times a day. When it happens, sure
> > enough I find this in the logs: 
> > 
> > named[6905]: 18-Feb-2010 22:31:41.201 client 82.70.24.23#55710: query:
> > 28.214.138.70.itx.munged.org.uk IN TXT + 
> > named[6905]: 18-Feb-2010 22:31:42.560 client 82.70.24.23#52806: query:
> > 28.214.138.70.itx.munged.org.uk IN TXT + 
> > 
> > Here the last query is identical to the first buy made just over a
> > second later.
> > 
> > I'm not sure this is an issue with BIND and I suspect that it may be the
> > program (Postfix) that is querying the server firing off occasional
> > duplicate queries? I'm clutching at straws to understand what is going
> > on here - can anyone offer me some advice?
> 
> Did it get a response to the first query?  If not, the second one is 
> simply retrying because it timed out waiting for a response.
> 
You know something, that had not crossed my mind. I can't think of any
easy way to check this - but looking though all the other logs on the
system - right down to the wan link, nothing is out of place.

 




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