How to give a greeting message

[Irwan Hadi]

I want to know, how to give a greeting message to a person when s/he
connect to port 25 , and not just ESMTP .
For example, Welcome to xxx, mm/dd/yy,hh:mm:ss , this mailserver is using
QMAIL version 1.03

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AFLHI 058009990407128029/089802---(102598//991024)