421GREETING

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Rejects a connection right away with a 421 in the greeting line and starts in a dummy mode where only QUIT works unless SMTP550DISCONNECT is set -- in that case the connection will closed immediately after printing the greeting.

Default: 

off

Affects: 

qmail-smtpd

Example: 

""
"Go away!"

Note:

  • You can set this in tcpserver if you want to reject messages from an IP address temporarily.
  • If no string is given it will default to "Service temporarily not available (#4.3.2)".
  • The timeout is reduced to 20 seconds to prevent starvation.
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