Re: Solving reverse DNS problem with Postfix configuration?

[Benny Pedersen]

On 2022-04-12 14:20, Jaroslaw Rafa wrote:

Probably not, because smtp.xs4all.nl has IP address 195.121.65.191, and

reverse DNS for 195.121.65.191 is 195-121-65-191.dc.kpn.net. So it is also a "generic" hostname which may cause some systems to reject mail sent from this address. The ISP has configured it wrong; 195.121.65.191 should resolve

back to smtp.xs4all.nl.

its a dynamic ip, doh

https://multirbl.valli.org/lookup/195.121.65.191.html