Multiple A records and reverse DNS

Barry Margolin barmar at
Thu Mar 17 17:03:44 UTC 2016

In article <mailman.365.1458222814.73610.bind-users at>,
 schulz at (Thomas Schulz) wrote:

> This is not a BIND question but I hope people here will know the answer.
> We are switching service providers and I understand that many email SPAM
> prevention systems insist on the reverse DNS matching the forward DNS.
> If I have two A records for our mail server and the reverse record matches
> one of them, will that be good enough. Or will the fact that the other A
> record does not match cause trouble.

It should be OK. This is a fairly common situation for redundancy.

Barry Margolin
Arlington, MA

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