[edit] xclient

syntax: xclient on | off

default: on

context: mail, server

With this directive you can enable or disable the command XCLIENT with the connection to SMTP backend. This allows the backend to enforce limitations on the client based on IP/HELO/LOGIN.

If xclient is enabled then nginx first transfers to the backend:

EHLO server_name

Then:

XCLIENT PROTO=ESMTP HELO=client_helo ADDR=client_ip LOGIN=authentificated_user NAME=[UNAVAILABLE] 

[edit] References


Module: MailProxyModule