Re: Sender IP reverse lookup rejected

2019-08-14 Thread Kris Deugau
Kadlecsik József wrote: Hello, One of our users reported a rejected email with the error code and message Remote-MTA: dns; artemis.gat.com Diagnostic-Code: smtp; 550 Sender IP reverse lookup rejected We handle several domains with different outgoing smtp settings at multiple mail gateways

Re: Sender IP reverse lookup rejected

2019-08-14 Thread Kadlecsik József
On Wed, 14 Aug 2019, Kadlecsik József wrote: > It seems it's a persistent problem. I tried to contact the postmaster at > the other side but of course got the same reject. We'll try to contact > them via a third party. Using a third party as a relay, I got the same error message. Maybe the who

Re: Sender IP reverse lookup rejected

2019-08-14 Thread Kadlecsik József
On Wed, 14 Aug 2019, Wietse Venema wrote: > Kadlecsik J?zsef: > > It seems it's a persistent problem. I tried to contact the postmaster at > > the other side but of course got the same reject. We'll try to contact > > them via a third party. > > In that case, try setting > > -o inet_pro

Re: Sender IP reverse lookup rejected

2019-08-14 Thread Wietse Venema
Kadlecsik J?zsef: > It seems it's a persistent problem. I tried to contact the postmaster at > the other side but of course got the same reject. We'll try to contact > them via a third party. In that case, try setting -o inet_protocols=ipv4 (or ipv6) and see if it is a specific kind o

Re: Sender IP reverse lookup rejected

2019-08-14 Thread Kadlecsik József
On Wed, 14 Aug 2019, Wietse Venema wrote: > > One of our users reported a rejected email with the error code and > > message > > > > Remote-MTA: dns; artemis.gat.com > > Diagnostic-Code: smtp; 550 Sender IP reverse lookup rejected > > > > We handle se

Re: Sender IP reverse lookup rejected

2019-08-14 Thread Wietse Venema
Kadlecsik J?zsef: > Hello, > > One of our users reported a rejected email with the error code and message > > Remote-MTA: dns; artemis.gat.com > Diagnostic-Code: smtp; 550 Sender IP reverse lookup rejected > > We handle several domains with different outgoing smtp sett

Sender IP reverse lookup rejected

2019-08-14 Thread Kadlecsik József
Hello, One of our users reported a rejected email with the error code and message Remote-MTA: dns; artemis.gat.com Diagnostic-Code: smtp; 550 Sender IP reverse lookup rejected We handle several domains with different outgoing smtp settings at multiple mail gateways: # /etc/postfix/master.cf