[dns-operations] does it matter when nameserver recs have non-matching PTRs ?

[Jim Popovitch]

On Sat, Aug 1, 2015 at 2:22 PM, Mark Jeftovic <markjr at easydns.com> wrote:
>
> Ideally there is some leeway for common sense, i.e.
>
> ns1.example.com is temporarily using 192.168.4.13
>
> and if the PTR on 192.168.4.13 has a PTR to another hostname under the
> same superdomain (example.com), it should signal the same intent.
>
> If the IP PTR's back to mx.hotmail.com, then sure, I can see the
> reluctance to allowing the delegation.
>

So is this not considered a good use:

~$ dig NS speedyiguana.com
ns1.speedyiguana.net.

~$ host ns1.speedyiguana.net
ns1.speedyiguana.net has address 107.191.126.119

~$ host 107.191.126.119
119.126.191.107.in-addr.arpa domain name pointer ns1.domainmail.org.

-Jim P.