DNS question

John Cornelius jc at lht.com
Sun Jan 6 14:22:28 UTC 2008



Ashley M. Kirchner wrote:
>
>    We used to have a client that we hosted their domains on our DNS.  
> They have moved to a different host a while ago - like months ago.  
> Now suddenly, in the past 48 hours, I'm seeing a bunch of these in my 
> logs:
>
>
> named[1920]: client 216.199.46.11#58010: query (cache) 
> 'travelhacker.com/A/IN' denied
> named[1920]: client 70.46.90.166#1064: query (cache) 
> 'travelhacker.com/A/IN' denied
> named[1920]: client 208.109.78.200#31909: query (cache) 
> 'travelhacker.com/MX/IN' denied
> named[1920]: client 38.102.229.30#32772: query (cache) 
> 'travelhacker.com/MX/IN' denied
> named[1920]: client 208.53.147.132#41941: query (cache) 
> 'travelhacker.com/CNAME/IN' denied
> named[1920]: client 70.46.90.166#1064: query (cache) 
> 'travelhacker.com/MX/IN' denied
>
>    I have bind setup to deny recursive lookups, and it's doing what 
> it's supposed to do there.  However, is there any harm being done 
> here?  Should I be looking into some way to have this stopped somehow?
>
You may have still been listed as a name service in the root servers for 
some reason or someone is using an out of date cached version of their 
information. That's their problem, not yours and it probably isn't going 
to do anything except suck up bandwidth.

If it isn't happening too often I wouldn't worry about it since it 
should correct itself eventually.

--jc




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