From owner-freebsd-questions@FreeBSD.ORG Sun May 19 01:33:53 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id F025E1D7 for ; Sun, 19 May 2013 01:33:53 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-wi0-x236.google.com (mail-wi0-x236.google.com [IPv6:2a00:1450:400c:c05::236]) by mx1.freebsd.org (Postfix) with ESMTP id 87D04D2E for ; Sun, 19 May 2013 01:33:53 +0000 (UTC) Received: by mail-wi0-f182.google.com with SMTP id c10so1208839wiw.9 for ; Sat, 18 May 2013 18:33:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=date:from:to:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type:content-transfer-encoding; bh=BCCAWkD+LHGFtQKrGpVH10tSAhrDAdN8jJ/6+4yLY54=; b=R/u9L3IPKhDkqCj+ZJzctmx+qUHJ4jV+XKhY/s51Q9YBsV9GCDKwr8lhz7DqcjrPzX o7rxxTBj4/y+AvDvVaR2F737AWO0/MlicTqrE6lK9uME1ruZSsCBKtOHQeJH45MTrxsQ l8Fuu2hddXaVzCnUyd7ZkevanatKYGXvPopVK1DW6T81vbUnjXssu0OlMdpDiJeaG/4I q0AlnWlbyafi2Yw9RzYZAhCIEyCNhi6eZkqBdy9hh4QG1dM+iNYCTnSc1VmaDmJrDpC1 upSvA76LvpuCt/XZajipJ973PEByG9MlSSdtDr79aOLe80P74yb/WCbEGc84rvZBq+5E jepg== X-Received: by 10.180.72.230 with SMTP id g6mr4149351wiv.8.1368927232639; Sat, 18 May 2013 18:33:52 -0700 (PDT) Received: from gumby.homeunix.com (87-194-105-247.bethere.co.uk. [87.194.105.247]) by mx.google.com with ESMTPSA id dj7sm5809223wib.6.2013.05.18.18.33.51 for (version=SSLv3 cipher=RC4-SHA bits=128/128); Sat, 18 May 2013 18:33:52 -0700 (PDT) Date: Sun, 19 May 2013 02:33:49 +0100 From: RW To: freebsd-questions@freebsd.org Subject: Re: List Spam Filtering Message-ID: <20130519023349.112cd45d@gumby.homeunix.com> In-Reply-To: <20130517091535.03fd7442@scorpio> References: <201305110134.r4B1Yl8q089784@fire.js.berklix.net> <5195582D.10404@cran.org.uk> <20130517064233.7d34e4cf@scorpio> <51961A75.6060605@cran.org.uk> <20130517131932.03450167@gumby.homeunix.com> <20130517084529.57f67259@scorpio> <20130517140301.38d772cc@gumby.homeunix.com> <20130517091535.03fd7442@scorpio> X-Mailer: Claws Mail 3.9.0 (GTK+ 2.24.17; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 May 2013 01:33:54 -0000 On Fri, 17 May 2013 09:15:35 -0400 Jerry wrote: > On Fri, 17 May 2013 14:03:01 +0100 > RW articulated: > > > On Fri, 17 May 2013 08:45:29 -0400 > > Jerry wrote: > > > > > On Fri, 17 May 2013 13:19:32 +0100 > > > RW articulated: > > > > > > > On Fri, 17 May 2013 12:54:29 +0100 > > > > Bruce Cran wrote: > > > > > > > > > Yes, seriously. Have you seen the number of people who post > > > > > messages "PLEASE REMOVE ME FROM THIS MAILING LIST!!", > > > > > apparently not understanding how to manage their subscription? > > > > > > > > There's also the likelyhood that reluctant subscribers are less > > > > likely to take care about avoiding various types of backscatter. > > > > > > Well, unless the reluctant subscriber is running an incorrectly > > > configured MTA, I don't see a problem with "backscatter". Now, if > > > they do have a maladjusted MTA, they have more problems then just > > > subscribing to a list. > > > > Out of Office replies, sieve rejects, anti-spam challenges etc > > Yes, an incorrectly configured MTA or one of its milters. Not especially > There are > ways to deal with these assholes. Only some of it, and there's no general way of dealing with the out-of-list component. > Allowing a blanket "open-door" > policy is like setting file permissions on everything to 0777 just > because you are to lazy to find a correct solution to a problem. Actually requiring subscription is pretty much like setting 0777, it's really only a protection against accidental list spamming. If a spammer actually wanted to spam lists he could harvest subscribed addresses, or simply subscribe.