I use my GNATBOX as the external DNS for my domain (xpasc.com).

My ISP has delegated the reverse lookup for
   65.85.17.142
as
   email.xpasc.com

This is in fact the forward name ... and this has been sufficient for
many years to pass spam filters so I've not dug any deeper. But
now I'm getting more and more grief.

Question 1.  Has the ISP done the correct and logical thing here?

If not, what is the best practices way for them to delegate my 16 IP
subnet so GNATBOX rDNS will respond properly?

If this is appropriate ... how do I fill in the GNATBOX rdns setup so that
65.85.17.142 resolves to a PTR record to email.xpasc.com?

I'm running GB V3.6.1 ... if upgrading would fix this, then I'm willing
to upgrade.

Thanks,
   Dave Morris

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