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From "Harmeet Bedi" <harm...@kodemuse.com>
Subject Re: postmaster configuration variable
Date Mon, 11 Nov 2002 02:40:07 GMT
From: "Alan Gerhard" <alan.gerhard@GerCom.Com>
> server's postmaster account...
> weather or not an account is valid or not is irrelevant, just as long as
one
> exists.

This client server handshake must hold

S: 220.*
C: HELO foobar.com
S: 250.*
C: MAIL FROM: <test@foobar.com>
S: 250.*
C: RCPT TO: <postmaster@localhost>
S: 250.*
C: QUIT
S: 221.*

Where C is client data and S  is server resonse. .* is regex pattern.

Recieving mail servers may do this loop back test to validate mail server.
Filters out at least some of the worst spammers.

Harmeet


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