[AusNOG] IPv6 reverse DNS and Mail ...

[Scott Howard]

On Sun, May 19, 2013 at 11:21 PM, Mark Andrews <marka at isc.org> wrote:

>
>         Or you could just follow the RFC and accept email regardless
>         of whether there is a PTR record or not.  Every site that
>         drops email based on the lack of a PTR records is violating
>         a MUST NOT.
>

RFC number and section, please...

(Hint: RFC 5321, section 6.2, 7.8 and 7.9 will override most answers -
although given that we're talking about IP address and not HELO/EHLO
strings, I don't even think there's anything for them to override!)

  Scott
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