is reverse dns required? (policy question)

Wed Dec 1 17:27:54 UTC 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 <gba at undef.net> 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.
> 