Reverse DNS

B.J. Sanaee bjsanaee at devilsadvocate.net
Sat Nov 6 22:01:06 UTC 1999



On Sat, 6 Nov 1999 Paula.Deal at MitchellRepair.com wrote:

> 
> I am having a problem with Reverse DNS for my domain mitchellrepair.com
> If I look up the following address 35.82.212.207.in-addr.arpa for PTR
> records, the return information tells me 
> 
> Name:  35.82.212.207.in-addr.arpa Type=CNAME Class=1 TTL=3882
> CNAME=35.32.82.212.207.in-addr.arpa
> 
> Clearly this is incorrect.  The reverse lookup should be resolving to
> ns.mitchellrepair.com
> 
> I am primary DNS and the ISP is secondary.  I have called them and their
> response is the problem is on my side.  Locally on the server, when I
> look up this information I receive the correct information.

mail:~$ host -t ns 32.82.212.207.in-addr.arpa
32.82.212.207.in-addr.arpa name server ns1.pbi.net
32.82.212.207.in-addr.arpa name server ns2.pbi.net
32.82.212.207.in-addr.arpa name server ns.mitchellrepair.com

  PBI delegated reverse for your ip address(es) to you as recommended 
by rfc 2317. Your name server should be configured to be authoritative for
the zone "32.82.212.207.in-addr.arpa".
  Then in the data file for the zone you'd have ptr records like

35 IN PTR host.name.

  You should probably have some sort of documentation from PBI
detailing this.

  B.J.




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