Hi Wietse Sorry should have mentioned after your reply that ipv6 is disabled on all my boxes. And have postfix inet_protocol set to ipv4 anyway So no reason for postfix to query a nameserver via ipv6. At least I do not see one :-)
Regards tobi ----- Originale Nachricht ----- Von: Wietse Venema <wie...@porcupine.org> Gesendet: 16.05.2017 - 16:19 An: Postfix users <postfix-users@postfix.org> Betreff: Re: Why does reject_unknown_reverse_client_hostname reject this mail? > Tobi: >> Am 16.05.2017 um 13:15 schrieb Wietse Venema: >> > Tobi: >> >>> Client host rejected: cannot find your reverse hostname, >> >>> [185.140.48.241] >> > Here's a hint: >> > >> > % host 185.140.48.241 >> > ;; connection timed out; no servers could be reached >> I can reliably resolve that ip from my server. > > Read my reply again, and pay attention to the part that > talks about IPv6. > > Wietse
