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Eduard Florinescu
Asked: 2014-04-23 21:54:06 +0800 CST

Do reverse entries for name-server, need to match the mailserver name?

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I need to setup PTR for a domain and lets say my domain is domain.com and I have my email addresses like [email protected].

I came over this mailing-list article that says:

The reverse entries for your nameserver don't have to match your mailserver name but they must be consistent, i.e. the reverse must resolve forward to the IP addresses.

Does this mean that I could have this PTR record:

44.33.22.11.in-addr.arpa  300  IN  PTR subdomain.domain.com.
88.77.66.55.in-addr.arpa  300  IN  PTR subdomain2.domain.com.

and this A records:

subdomain.domain.com.   3256    IN  A   11.22.33.44
subdomain2.domain.com.  3256    IN  A   55.66.77.88

and it will work ?

Or do I need to have also:

domain.com. 3256    IN  A   11.22.33.44
domain.com. 3256    IN  A   55.66.77.88

or 

domain.com. 3256    IN  MX  subdomain.domain.com. 
domain.com. 3256    IN  MX  subdomain2.domain.com.

for everything to work?

domain-name-system

1 Answers

  1. Best Answer

    Yes, this is what it means. You don't need the domain.com entry, just the A and PTR records for the mailserver's IP

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