Sorry for the top posting.
http://www.stretchoid.com/
has a way to opt out. Unfortunately they want you to give them your IP space
rather than the other way around. They use a floating IP scheme and can't
easily be blocked.
Original Message
From: 400the...@gmx.ch
Sent: April 28, 2021 9:25 PM
To: postfix-users@postfix.org
Subject: Postfix shows unknown instead of resolved hostname
Hello,
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243.stretchoid.com does not resolve to
address 192.241.220.141: Name or service not known
connect from unknown[192.241.220.141]
timeout after EHLO from unknown[192.241.220.141]
disconnect from unknown[192.241.220.141] ehlo=1 commands=1
It is a good thing that postfix warns me that hostname does not resolve
back to the IP, but why does it show:
connect from unknown[192.241.220.141]
instead of
connect from zg-0416b-243.stretchoid.com[192.241.220.141]
The IP has DNS record, so even when reverse does not work, I would like
to see the hostname that is connecting
can this be configured?
thank you,
