Start/notes.ini Parameters/SMTPGreeting

SMTPGreeting

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Parameter: SMTPGreeting
Short description: Sets the SMTP greeting text (220 banner) of the Domino SMTP listener.

Profile

Parameter
SMTPGreeting
Category
Mail / Router
Component
Server
Available since
R6
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5
GUI equivalent
Configuration document (Router/SMTP → Inbound)
Possible values
Free-form string; %s is replaced by the host name

Description

SMTPGreeting defines the greeting line (220- banner) that Domino emits on incoming SMTP connections. The banner is typically used to hide product / version information or to deliver a controlled message (host name, AUP notice, help URL).
If %s is used in the value, Domino automatically replaces the placeholder with the server's host name.

Example configuration

SMTPGreeting=%s ESMTP Service ready

Notes & pitfalls

  • The default banner reveals product + version – always customize this on internet-facing servers.
  • Complements DominoNoBanner=1 (which applies across protocols for POP3 / IMAP / HTTP).
  • The banner must be RFC-compliant – no line breaks, no disallowed special characters.
  • Some spam / antivirus gateways inspect the banner for identification – test in advance.
  • The change only takes effect after restarting the SMTP listener (restart task smtp).