From owner-freebsd-questions@FreeBSD.ORG Mon Mar 12 02:14:27 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B10C416A402 for ; Mon, 12 Mar 2007 02:14:27 +0000 (UTC) (envelope-from chad@shire.net) Received: from hobbiton.shire.net (mail.shire.net [166.70.252.250]) by mx1.freebsd.org (Postfix) with ESMTP id 98FF413C44C for ; Mon, 12 Mar 2007 02:14:27 +0000 (UTC) (envelope-from chad@shire.net) Received: from [67.171.127.191] (helo=[192.168.99.68]) by hobbiton.shire.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.51) id 1HQa3P-0004xJ-5W; Sun, 11 Mar 2007 20:14:27 -0600 In-Reply-To: References: <26face530703101127l558d2db7y54ddb6674d663383@mail.gmail.com> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: "Chad Leigh -- Shire.Net LLC" Date: Sun, 11 Mar 2007 20:14:26 -0600 To: Jeffrey Goldberg X-Mailer: Apple Mail (2.752.2) X-SA-Exim-Connect-IP: 67.171.127.191 X-SA-Exim-Mail-From: chad@shire.net X-SA-Exim-Scanned: No (on hobbiton.shire.net); SAEximRunCond expanded to false Cc: User Questions Subject: Re: Tool for validating sender address as spam-fighting technique? 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: Mon, 12 Mar 2007 02:14:27 -0000 On Mar 11, 2007, at 5:11 PM, Jeffrey Goldberg wrote: > > In this case the counter counter measures available to spammers is > so much easier and cheaper than the verification system itself, > that it's not really a good idea to try such verification. that is always true, at least with existing technology. The counter measures always cost more than the sending of the spam Chad --- Chad Leigh -- Shire.Net LLC Your Web App and Email hosting provider chad at shire.net