[Pdns-users] strange resolution problem

Derrik Pates demon at devrandom.net
Tue Jun 22 13:31:34 UTC 2010

On 06/22/2010 06:31 AM, Mario Caruso wrote:
> Hello,
> I've just upgrade my bind dns cache server to pdns-recursor and I'm having some troubles
> in resolving the name hostname www.cafsials.it ; this should be a CNAME to another record :
> web.dataufficio.com , but it seems taht pdns_recursor daemon is not accepting this resolution
> ... but I cannot understand why, if I try to resolve it with bind daemon on the same server I get
> a valid responde.
> Here is an except from the daemon log files, can someone  explain me what is happening ?

After doing a little checking myself, it looks like the nameserver for 
the 'cafsials.it' is trying to bundle the referral-chasing into its 
response, because it has a zone for 'dataufficio.com'. Frankly I'm 
surprised that the recursor is showing any credulity to the additional 
stuff in the authority zone; that said, the 'dataufficio.com' zone 
should be removed from the nameservers being used, if you can; if not, 
you might contact whoever runs it and mention that the zone shouldn't be 

Of course, that sort of authority-section stuffing should really be 
ignored to begin with. Bert, if you're reading this, can something be 
done about this?

Derrik Pates
demon at devrandom.net

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