From owner-freebsd-isp  Tue Jun 29  4:16:57 1999
Delivered-To: freebsd-isp@freebsd.org
Received: from sinope.eclipse.net.uk (sinope.eclipse.net.uk [195.188.32.121])
	by hub.freebsd.org (Postfix) with ESMTP id 35E071504E
	for <isp@FreeBSD.ORG>; Tue, 29 Jun 1999 04:16:40 -0700 (PDT)
	(envelope-from stuart@eclipse.net.uk)
Received: from eclipse.net.uk (elara.eclipse.net.uk [195.188.32.31])
	by sinope.eclipse.net.uk (8.9.3/8.9.3) with ESMTP id MAA04276;
	Tue, 29 Jun 1999 12:16:33 +0100
Message-ID: <3778AB40.54985E8C@eclipse.net.uk>
Date: Tue, 29 Jun 1999 12:17:20 +0100
From: Stuart Henderson <stuart@eclipse.net.uk>
Organization: Eclipse Networking Ltd.
X-Mailer: Mozilla 4.6 [en] (WinNT; U)
X-Accept-Language: en-GB
MIME-Version: 1.0
To: David Wolfskill <dhw@whistle.com>
Cc: isp@FreeBSD.ORG, mcambria@lucent.com
Subject: Re: sendmail masquerading unregistered domain
References: <199906282116.OAA22229@pau-amma.whistle.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-isp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

> And, of course, that also means that using such techniques as
> RBL-blocking spammers via your own SMTP daemon aren't likely to be 
> all that effective, since the spammer's SMTP dialog wasn't with 
> your daemon anyway.  :-(

I think check_local includes patches to let you parse the received
line. If you use POP3 to collect mail, there are -some- advantages :)
You can use HEAD <msg> 0 to fetch just the headers and scan them
so you can delete spam straight away (without having to wait for
the mail to be downloaded). Obviously less of a problem if you don't
have to pay for phone calls though..:)


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-isp" in the body of the message