On 11.04.22 15:38, Richard Rasker wrote:
I've been using Postfix for many years without significant problems.
However, due to a forced change in ISP, I can no longer have a correct
PTR record pointing to mail.linetec.nl, causing a lot of ISP's to
reject e-mail from my server.
Reverse DNS for my IP address now points to the ISP's generic name
77-172-184-9.fixed.kpn.net
Could I solve this by setting smtp_helo_name in main.cf to
77-172-184-9.fixed.kpn.net ? Or is this a bad idea?
this will not help your problem. many ISPs will reject not because helo name
but because of your reverse DNS format.
ask your ISP to change reverse DNS for your IP to mail.linetec.nl when
possible.
if not possible, you'll need external smtp server, or different ISP.
--
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