Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Should I set my IP address' PTR record to the domain ( or the subdomain where the mail server is ( It's a little confusing.

share|improve this question
The forward and reverse DNS should be mirrors of each other. Whatever IP points to should point to – MaQleod Sep 5 '11 at 21:33
up vote 1 down vote accepted

To expand on my comment, here is an example of proper forward and reverse DNS for mail (methods can vary if you will have multiple mail servers, here is an example where three are load balanced):

All mail servers and priority:

$ host | grep mail mail is handled by 15 mail is handled by 5 mail is handled by 10

Forward DNS on mail servers:

$ host has address
$ host has address
$ host has address

RDNS for mail IP:

$ host domain name pointer
share|improve this answer
To expand on this, if your mail domain actually points to the same IP as your naked domain, you should make the mail domain a CNAME and treat your naked domain as a proper host name and PTR to that. – Sep 5 '11 at 22:13

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .