reverse dns configuration for IPV4, IPV6+ dns+ mail ?

[Matus UHLAR - fantomas]

>On 06/19/2017 08:51 AM, Matus UHLAR - fantomas wrote:
>>long story short:
>>
>>>>>>in the "125.124.123.in-addr.arpa" zone:
>>>>>>
>>>>>>126   IN   PTR   mail.xxx.com.
>>
>>quoting your original message:
>>>What should I put for IPV4 reverse address : if I put mail.xxx.com, the
>>>reverse address will not point on ns.xxx.com, and if put ns.xxx.com, the
>>>reverse dns will not point on mail.xxx.com, and I shall have mail
>>>problem.
>>
>>you will not have problem. who told you that?

On 19.06.17 09:51, Pierre Couderc wrote:
>Thnk you, but your way of shortening the story ignores the IPV6. 

Yes, because the IPv6 is separate from IPv4 here. IPv6 is not a problem:
two different IPv6 addresses, two different AAAA records, one PTR for
"mail", and one PTR for "ns".

>If I do what you say reverse IP for DNS will point on mail.xxx.com 
>and not on ns.xxx.com.

I have asked you twice:

WHO TOLD YOU THIS IS A PROBLEM? IT IS NOT!

There are only a few services on the net who currently use reverse DNS
records. SMTP is the most important. DNS servers do not check that.

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