- Plesk for Windows
How to change hostnames in "Received:" line in SMTP logs?
PLESK_INFO: Received: from host1 (host1.example.com [203.0.113.2]) by host2.example2.com with SMTP;
According to the RFC2821, these addresses reflect real names of sending and receiving hosts, and cannot be changed in any way:
PLESK_INFO: This trace record indicates the identity of the host that sent the message, the identity of the host that received the message
The only option to change these names is to change the server hostname. For additional information refer to the article Is it possible to change the system's hostname on a Windows Server via Plesk UI?