[Pdns-users] pdns server fails every morning when it starts getting used.

bert hubert bert.hubert at netherlabs.nl
Thu Jan 8 08:47:03 UTC 2015

On Thu, Jan 08, 2015 at 09:17:38AM +1100, Peter Nunn wrote:
> I've got a pdns server at one site that is causing me massive headaches.  
> Every morning when the staff come in and start using it (and were not talking 
> large numbers) it fails to serve external dns and has to be restarted 
> (usually) or rebooted.

Which version of PowerDNS do you run? 

The recursor you specify is in fact an open recursor. This means it is
likely participating on DNS reflection attacks, and might therefore be slow
at times.  From here (in europe at least) is is very slow, so the timeout
may actually be real.

Does a restart always fix the issue for you?

> but as far as I can determine, the recursed dns server is quite happily 
> returning results.

Can you check 'dig ds9a.nl @' whenever you find that PowerDNS is
having problems with your recursor?


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