North American Network Operators Group

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Re: is reverse dns required? (policy question)

  • From: Robert Hayden
  • Date: Wed Dec 01 12:29:12 2004

Besides, if customers "need" it to make their mail work, choosing not to do it will be a good indication to your customers that another provider might be more supportive.

Basic non-custom reverse DNS on everything is a "good thing" to put in place regardless.

- Robert

J.D. Falk wrote:

On 12/01/04, Greg Albrecht <[email protected]> wrote:

are we obligated, as a user of ARIN ip space, or per some BCP, to provide ad-hoc reverse dns to our customers with-out cost, or without financial obligation.

From a purely network operations perspective: YES, every IP address should have matching forward & reverse DNS. That's been beyond best practices and into the "everybody does it unless they're really stupid" realm for well over a decade.
Reverse DNS has only become /more/ important as spam-blocking efforts noticed the strong correlation between networks too lazy
to maintain reverse DNS, and networks too lazy or evil to care if they were hosting spammers.

As for the finances...that's up to you, but I've never before heard of a provider who charged extra for it.