From owner-freebsd-questions  Wed Jan 28 15:36:04 1998
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id PAA17172
          for questions-outgoing; Wed, 28 Jan 1998 15:36:04 -0800 (PST)
          (envelope-from owner-freebsd-questions@FreeBSD.ORG)
Received: (from jmb@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id PAA17137;
          Wed, 28 Jan 1998 15:35:47 -0800 (PST)
          (envelope-from jmb)
From: "Jonathan M. Bresler" <jmb>
Message-Id: <199801282335.PAA17137@hub.freebsd.org>
Subject: Re: Stopping mail relaying (again)
In-Reply-To: <Pine.BSF.3.95q.980128171042.17011A-100000@federation.addy.com> from Cliff Addy at "Jan 28, 98 05:14:10 pm"
To: fbsdlist@federation.addy.com (Cliff Addy)
Date: Wed, 28 Jan 1998 15:35:46 -0800 (PST)
Cc: dan@dpcsys.com, questions@FreeBSD.ORG
X-Mailer: ELM [version 2.4ME+ PL32 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk

Cliff Addy wrote:
> On Wed, 28 Jan 1998, Dan Busarow wrote:
> 
> > On Wed, 28 Jan 1998, Cliff Addy wrote:
> > > According to the anti-relaying stuff on sendmail.org, this will stop
> > > relaying if placed in sendmail.cf:
> > 
> > Use Claus Assman's rules.  See http://www.beach.net/~dan for
> > the URL and some notes on how the rules work.
> 
> Like all the others, this seems to assume that I know what ip addresses
> spam is coming from.  I don't, my clients can be ANYWHERE.  I need to
> reject email based on their return or sending addresses, NOT the ip.  I
> need to have a file with a list of "allowed" domain names.  If abc.com is
> in the file, then mail to or from abc.com is allowed, REGARDLESS of
> whether the sending machine is abc.com

	is filtering on the envelope-from address acceptable to you?
	the check_mail rules will do this.
	chewck_mail examines the "MAIL FROM:" address

	the sending machine is ${client_addr} and ${client_name}
jmb