Resolved Problem mail (localhost [IPv6:::1])

[theplaza]

Server operating system version

Ubuntu 24.04.3

Plesk version and microupdate number

Plesk Obsidian 18.0.72

Hello,

I noticed that my email is going to spam on Gmail. Everything seems to be configured correctly except for

Received: from webmail.... (localhost [IPv6:::1]) by ..... (Postfix) with ESMTPSA id 4577F8B8F9 for <[email protected]>; Sun,

which appears in the email source.

I haven't configured IPv6, could this be the cause?

 

[Raul A.]

Please provide all log entries related to 4577F8B8F9

grep 4577F8B8F9 /var/log/maillog

 

[theplaza]

it was fixed via linux hosts file.

 

[Tobias Sorensson]

it was fixed via linux hosts file.

what was the fix?

 

[theplaza]

I commented out ipv6 so that only ipv4 works