On Fri, 16 Jul 2004 15:55:59 -0600, administrator wrote
That also is a problem. For many months now, and after repeated
requests, our upstream provider has still not delegated authority to
us for our "C" class domain. They act as secondary for our forward
lookup, but we can't seem to get through the beurocrats to the right
person to create the reverse zone. So for us, you will always get a
reverse lookup that does not correspond to the forward lookup.
Your ISP doesn't create A records to match their PTRs?
For example, on an SBC DSL connection:
$ host 68.250.97.41
41.97.250.68.IN-ADDR.ARPA domain name pointer
adsl-68-250-97-41.dsl.sfldmi.ameritech.net
$ host adsl-68-250-97-41.dsl.sfldmi.ameritech.net
adsl-68-250-97-41.dsl.sfldmi.ameritech.net has address 68.250.97.41
This is a perfectly valid PTR. Not very informative, but valid!