From owner-freebsd-isp  Fri Feb  6 13:35:31 1998
Return-Path: <owner-freebsd-isp@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id NAA05614
          for freebsd-isp-outgoing; Fri, 6 Feb 1998 13:35:31 -0800 (PST)
          (envelope-from owner-freebsd-isp@FreeBSD.ORG)
Received: from panda.hilink.com.au (panda.hilink.com.au [203.8.15.25])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA05564
          for <isp@FreeBSD.ORG>; Fri, 6 Feb 1998 13:35:18 -0800 (PST)
          (envelope-from danny@panda.hilink.com.au)
Received: (from danny@localhost)
	by panda.hilink.com.au (8.8.5/8.8.5) id IAA16784;
	Sat, 7 Feb 1998 08:34:59 +1100 (EST)
Date: Sat, 7 Feb 1998 08:34:59 +1100 (EST)
From: "Daniel O'Callaghan" <danny@panda.hilink.com.au>
To: "Darrin R. Woods" <dwoods@netgazer.com>
cc: David Babler <dbabler@Rigel.orionsys.com>, isp@FreeBSD.ORG
Subject: Re: spammer problem - help!
In-Reply-To: <3.0.32.19980206142216.00694dfc@netgazer.net>
Message-ID: <Pine.BSF.3.91.980207083314.294k-100000@panda.hilink.com.au>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-isp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org
X-To-Unsubscribe: mail to majordomo@FreeBSD.org "unsubscribe freebsd-isp"


> But, I don't understand (1) why mail.t-1net.com is still getting my server
> to take its mail and (2) why/how t-1net is forging the email to come from
> my mailer-daemon to my users.  They are not using me as a relay as that

They send mail as MAIL FROM: <MAILER-DAEMON> which is expanded to 
<MAILER-DAEMON@your.site>

You can use Claus Assman's rules to block unqualified addresses from 
being received from remote relays.

Danny