Duplicating queries??

Barry Margolin barmar at alum.mit.edu
Sat Feb 20 16:38:48 UTC 2010


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 82.70.24.237#55710: query:
> 28.214.138.70.itx.munged.org.uk IN TXT + 
> named[6905]: 18-Feb-2010 22:31:42.560 client 82.70.24.237#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.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***



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