Specifying the MTA host name lets you define the HELO banner during the initial portion of the SMTP conversation. The MTA host name also appears in Received headers. This host name is not connected to the OS-level host name of the Scanner. If you change the host name on the Edit Host page, the MTA host name is not changed.
To configure SMTP advanced settings
In the Control Center, click Administration > Hosts > Configuration.
Click the underlined name of the host you want to configure.
Click the SMTP tab.
Scroll to the bottom of the page and click Advanced Settings.
Make the desired configurations changes.
On the Host Configuration page, click Save.