Server Fault is a question and answer site for system and network administrators. 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

What are the advantages of setting up reverse DNS? I have a VPS with one static IP address, where I host several web apps each with its own domain name.

share|improve this question
up vote 2 down vote accepted

If you'll be sending mail from your VPS, it's in your best interest to set up a PTR record, lest your mail be frequently flagged as spam. Many mail servers check to verify that a sending server has a PTR record and, in many cases, that it matches that server's A record.

share|improve this answer

There's no particular advantage in clients or web servers having RDNS.

Mail originators should have it though, as it's an important part of the anti-spam validation process.

share|improve this answer

VMWare's ESX/ESXi products won't work in a HA cluster without both records, that's pretty worthwhile to me.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.