Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965409AbWJBVdo (ORCPT ); Mon, 2 Oct 2006 17:33:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965410AbWJBVdo (ORCPT ); Mon, 2 Oct 2006 17:33:44 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:39113 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S965409AbWJBVdn (ORCPT ); Mon, 2 Oct 2006 17:33:43 -0400 Subject: Re: Spam, bogofilter, etc From: Alan Cox To: Linus Torvalds Cc: "Martin J. Bligh" , Lee Revell , Matti Aarnio , linux-kernel In-Reply-To: References: <1159539793.7086.91.camel@mindpipe> <20061002100302.GS16047@mea-ext.zmailer.org> <1159802486.4067.140.camel@mindpipe> <45212F39.5000307@mbligh.org> <1159811392.8907.36.camel@localhost.localdomain> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Mon, 02 Oct 2006 22:58:32 +0100 Message-Id: <1159826312.8907.74.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 738 Lines: 15 > Of course, the MX checking can also be avoided, and a lot of spam-bots > know to use the ISP connection instead of a direct port-25 approach. But > at least that way, the mail gateway can (and often does) notice the > flooding, and many ISP's successfully throttle at least some spam at the > source, so it does actually have real meaning. Actually some of the smarter big ISPs with the less technical customers transproxy port 25 anyway - using big Linux boxes and the netfilter code. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/