[AusNOG] PTR Records

[staticsafe]

On 11/17/2014 20:25, David Beveridge wrote:
> Can anyone point me to any RFC which says that there are restrictions on
> the name a PTR can point to.
> 
> I have been told by a certain ISP that I cannot have a PTR pointing to
> mycompany.com.au as it is NON-standard and which cannot and should not be
> done.  They insist on setting the PTR to mail.mycompany.com.au and refuse
> to do as I ask.
> 
> I have never heard of any such thing.
> 
> dave.

I cannot point to any such RFC because it does not exist. Might want to
ask for some clue from your ISP.

Completely valid:
;; ANSWER SECTION:
1.0.0.0.0.b.e.3.0.0.0.0.0.0.0.0.4.0.0.0.0.0.0.4.8.9.0.0.0.2.6.2.ip6.arpa. 3600
IN PTR staticsafe.ca.

For mail sending servers, it is usually required that forward record
also match. (A and/or AAAA).

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staticsafe
https://staticsafe.ca