Bind9 logging options

Techi techi at
Tue May 18 06:13:01 UTC 2010

The DNS Servers are authoritive. I have more than 100 users for them, and the 
number of queries performed per minute is very high due to the nature of our 
organization. Moreover, I do not have a specific time window in which the 
timeouts occur, so, it is impossible to run it 24/7! From your answer I 
conclude that there is no such option, correct? 

On Mon 17 of May 2010 16:09:46 you wrote:
> Are the timed out queries recursive or authoritative?
> I'd suggest tcpdump running on both the BIND servers and the client, so
> you can match send/receive and show missed packets directly.
> Cheers,
> Todd.
> -----Original Message-----
> From: at
> [ at] On Behalf Of
> Techi
> Sent: Monday, May 17, 2010 6:39 AM
> To: bind-users at
> Subject: Bind9 logging options
> Hallo,
> I have a problem in my recursive DNS servers (Bind 9, on RHEL 5).
> Intalled
> package on my system is the latest bind-9.3.6-4.P1.el5_4.2 from Red Hat.
> My
> problem is that sometimes, queries are failed with timeouts and that the
> one
> of my 2 DNS servers (the one set as primaryin my users) has 3 time more
> failed
> queries than the secondary, while the succesful queries are almost the
> same. .
> I am almost sure that the problem is network related (hardware or
> software),
> but I need a proof for that. Is there any way to log the timed-out
> queries in
> a log file?
> Thank you
> Techi
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