Domain name registration: A records and PTR records need to match?

[Kevin Darcy]

HYK_TremorZ at hotmail.com wrote:

> I've been having a dickens of a time trying to register dns servers to
> my domain name registrars (to both namecheap.com and register.com).
>
> I'm wondering though, do both the registered pointer records and A
> records have to be the same for it to work?  I'm trying to register
> this machine in my lab (lucky.cs.uml.edu) as an authoratative primary
> name server for my domain testing123.net (both are the same machine)
> but it doesn't seem to work.
>
> Here is what happens when i dig my IP address
>
> ivan at lucky:~$ dig -x 129.63.24.90|more
>
> ; <<>> DiG 9.2.1 <<>> -x 129.63.24.90
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30808
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL
> : 3
>
> ;; QUESTION SECTION:
> ;90.24.63.129.in-addr.arpa.     IN      PTR
>
> ;; ANSWER SECTION:
> 90.24.63.129.in-addr.arpa. 86393 IN     PTR     lucky.cs.uml.edu.
>
> ;; AUTHORITY SECTION:
> 24.63.129.in-addr.arpa. 86393   IN      NS      saturn.cs.uml.edu
> ..
> 24.63.129.in-addr.arpa. 86393   IN      NS      mars.cs.uml.edu.
> 24.63.129.in-addr.arpa. 86393   IN      NS      phobos.cs.uml.edu
> ..
>
> ;; ADDITIONAL SECTION:
> ;; ADDITIONAL SECTION:
> saturn.cs.uml.edu.      253227  IN      A       129.63.8.2
> mars.cs.uml.edu.        253227  IN      A       129.63.32.3
> phobos.cs.uml.edu.      253227  IN      A       129.63.16.100
>
> ;; Query time: 1 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Sat Jun 29 17:19:39 2002
> ;; MSG SIZE  rcvd: 182

I doubt that either of those registrars require matching A/PTR records.

In any case, it's a moot point since for lucky.cs.uml.edu, the A and PTR
records *do* match. Why do you think they don't? Look at what's in the
Answer section of the response...


- Kevin