Re: reject_unknown_reverse_client_hostname RFC basis?
- On Thursday, December 1, 2011, 12:09:42, Blake Hudson wrote:
> I was under the impression that hosts using SMTP were required to have aRFC 1912 Common DNS Errors
> valid reverse DNS entry. The reject_unknown_reverse_client_hostname
> restriction would then enforce this requirement. However, I can't find a
> basis for this in RFC 821, 2821, or 5321. The closest I can find is
> helo/ehlo requirements. Is there, in fact, any requirement for sending
> hosts to have a valid rDNS entry?
2.1 Inconsistent, Missing, or Bad Data
Make sure your PTR and A records match. For every IP address,
there should be a matching PTR record in the in-addr.arpa domain.
rodd@... "The avalanche has already started, it is too
Rod Dorman late for the pebbles to vote." - Ambassador Kosh