smtp-hostname verifiedWritten by the Hub
Name announced in the greeting
in the configuration this is a line
smtp-hostname: …Hostname the SMTP server presents in its banner, overriding the system hostname.
Values
- Values
any hostname- applying
restart required- where it can be set
in the config file · with a startup flag · as an environment variable
In detail
Added in 5.14.0. Matters because the banner is the first thing a submitting client sees and, more importantly, because the node's own system name is often meaningless — our stand calls itself test-3.com, a parked domain that has nothing to do with the mail it would send. For outgoing HELO names the relevant setting is the mtanames table, not this one; confusing the two is easy.