From owner-freebsd-questions@FreeBSD.ORG Tue Apr 27 19:44:20 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A5E6D106566C for ; Tue, 27 Apr 2010 19:44:20 +0000 (UTC) (envelope-from merlyn@stonehenge.com) Received: from red.stonehenge.com (red.stonehenge.com [208.79.95.2]) by mx1.freebsd.org (Postfix) with ESMTP id 9302C8FC12 for ; Tue, 27 Apr 2010 19:44:15 +0000 (UTC) Received: by red.stonehenge.com (Postfix, from userid 1001) id 8CCFE718B; Tue, 27 Apr 2010 12:44:14 -0700 (PDT) From: merlyn@stonehenge.com (Randal L. Schwartz) To: John References: <20100427193106.GA91570@elwood.starfire.mn.org> x-mayan-date: Long count = 12.19.17.5.11; tzolkin = 10 Chuen; haab = 4 Uo Date: Tue, 27 Apr 2010 12:44:14 -0700 In-Reply-To: <20100427193106.GA91570@elwood.starfire.mn.org> (john@starfire.mn.org's message of "Tue, 27 Apr 2010 14:31:06 -0500") Message-ID: <861ve0he9d.fsf@red.stonehenge.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-questions@freebsd.org Subject: Re: Really simple spam trap - /dev/pf permissions? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Apr 2010 19:44:20 -0000 >>>>> "John" == John writes: John> (Obviously, I'll want to add to my cron scripts to age entries out John> of the spammers table, just to keep it down to a manageable size. John> I already have two dozen entries.) You'll have a lot of collateral damage. I've worked with a lot of schemes over the years for spamfighting. A lot of spam is sourced inside corporate or educational choke points, meaning that a spam message from inside a company would block all remaining mail from that company. So, for this to work, you really need to time out your blocks no more than an hour or two later, or legit mail will get unnecessarily delayed. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion