Postfix - SMTP Banner
Table of Contents
About
The smtp banner is printed when a remote client connect to the SMTP server.
It's the text that follows the 220 status code in the SMTP greeting banner.
Example
With a connection through the network with SMTP command
nc localhost 25
- We receive the banner
220 server01.bytle.net ESMTP Postfix
Postfix Configuration
- smtpd_banner it default to $myhostname ESMTP $mail_name