Hi,
@shlomi absolutly amazing! great respect what you created!
in front of my mailcow server i use proxmox mail gateway… so in my view it looks like this:

and this ip is the proxmox mail gateway…
maby you can show in this details ALL detected ip adresses?
in my example in source of the mail i have this:
Received: from mail.####.## ([172.22.1.253]) <–mailcow
Received: from pmg9.####.## (unknown [192.168.62.157]) <– proxmox mail gateway
Received: from smtpclient.apple ([88.130.169.0]) <– real source ip
Thank you very much!