On Thu, Aug 10, 2017 at 07:26:16PM +0100, Stuart Henderson wrote: > Rephrasing: if you make an outgoing SMTP connection, a reverse DNS PTR > record should exist for the source address you're connecting from (whether > that's v4 or v6), and an A (for v4) or AAAA (for v6) lookup for the name > in that PTR should give back the same address. > > For your example: > > 185.37.212.61 -> server.roquesor.com > server.roquesor.com -> 185.37.212.61 > > That looks good. > > If you are making outgoing SMTP connections from a v6 address, then you > should have matching PTR+AAAA as well.
OK. Huff!, it's just I got dizzy. After all the advises I got in this thread I started to doubt even about my existence. :-) Thank you Stuart!
