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

[Mark Jeftovic]

On 2015-08-03 11:19 AM, Jim Popovitch wrote:

>>> ~$ 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.
>>>
>>
>> Indeed.
>>
>> Good luck getting anything delegated to ns1.speedyiguana.net under .IS!
> 
> To be honest, is anybody doing that anyways?
> 

I don't understand what you mean above, is anybody doing "that" ?

> ns?.domainmail.org handles DNS for several domains, of which those
> domains use their own NS names... because glue works better that way
> when you are hosting non-.org TLDs on a .org infrastructure, but
> surely you would know that.
>

Fine can of worms you've opened here. All of them would have issues
getting delegated under various ccTLDs.

Yet I see Paul's earlier point that some basic minimum of "is this
really a nameserver that is prepared to accept a delegation" is not a
bad thing - it's true that hardly any gTLDs do any of this (and I think
that's a problem too)

So what' the medium?

Earlier I said "what if both records are under the same superdomain" and
you trot out this example, which also seems valid.

* both records under the same superdomain

OR

* records indicate that they are being used as a nameserver by naming
themselves... nsX, dnsX, and what else? (We have some nameservers named
"rush", "motorhead" and "nirvana")

OR

* you go back to full-on checking for a valid SOA on the subject domain
from the proposed nameserver. Lots of people hate that.

- mark




> -Jim P.
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