Reverse DNS

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

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

> I am having a problem with Reverse DNS for my domain
> If I look up the following address for PTR
> records, the return information tells me 
> Name: Type=CNAME Class=1 TTL=3882
> Clearly this is incorrect.  The reverse lookup should be resolving to
> 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 name server name server name server

  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 "".
  Then in the data file for the zone you'd have ptr records like


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


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