From owner-freebsd-isp Mon Dec 10 0: 2: 8 2001 Delivered-To: freebsd-isp@freebsd.org Received: from grumman.kjsl.com (Armada.KJSL.COM [206.55.228.149]) by hub.freebsd.org (Postfix) with ESMTP id 6AF5237B419 for ; Mon, 10 Dec 2001 00:02:06 -0800 (PST) Received: from grumman.kjsl.com (localhost.kjsl.com [127.0.0.1]) by grumman.kjsl.com (8.12.1/8.12.1) with ESMTP id fBA820R6013361; Mon, 10 Dec 2001 00:02:00 -0800 (PST) Received: (from javier@localhost) by grumman.kjsl.com (8.12.1/8.12.1/Submit) id fBA820sT013358; Mon, 10 Dec 2001 00:02:00 -0800 (PST)?g (envelope-from javier) From: Javier Henderson MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15380.27640.83264.112194@grumman.kjsl.com> Date: Mon, 10 Dec 2001 00:02:00 -0800 To: Leif Neland Cc: Javier Henderson , Subject: Re: RBL's and tagging email with sendmail In-Reply-To: <20011210005404.K52959-100000@arnold.neland.dk> References: <15375.40652.719713.111631@grumman.kjsl.com> <20011210005404.K52959-100000@arnold.neland.dk> X-Mailer: VM 6.96 under Emacs 21.1.2 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Leif Neland writes: > > > > I've had mixed luck with using the various RBL's out there. The rate > > of false positives can be high sometimes, resulting in too many > > legitimate messages being bounced. > > What do you mean by false positives? > > A: Blocking on servers which aren't open relays anymore? educate the > admins to report to the dnsbl when they have fixed their open relays. > > B: Blocking on mail which is not spam, but from servers which are open > relays? Educate the admins, because they WILL be abused someday, even if > they haven't yet. Or if this doesn't help, the users will eventually move > to a responsible ISP, making inresponsible ISP's to go out of business. All fine points, but false positives still happen and I'd rather not miss user's email, so tagging rather than outright rejecting is preferrable, at least for me. If you have any ideas as far as how to implement the tagging, I'd love to hear them. -jav To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message