From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965903AbXIKCoE (ORCPT ); Mon, 10 Sep 2007 22:44:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965452AbXIKCnx (ORCPT ); Mon, 10 Sep 2007 22:43:53 -0400 Received: from barikada.upol.cz ([158.194.242.200]:52016 "EHLO barikada.upol.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965414AbXIKCnx (ORCPT ); Mon, 10 Sep 2007 22:43:53 -0400 To: Alan Cox Cc: linux-kernel@vger.kernel.org, Sami Farin Subject: Re: Broken mail setup In-Reply-To: <20070910143934.1a695d54@the-village.bc.nu> References: <20070910135912.29ad26e8@the-village.bc.nu> <20070910132042.33g4fhsgra4bzysh@m.safari.iki.fi> <20070910143934.1a695d54@the-village.bc.nu> Mail-Followup-To: linux-kernel@vger.kernel.org, Sami Farin User-Agent: slrn + jed (x86_64-pc-linux-glibc-debian) Date: Tue, 11 Sep 2007 04:59:08 +0200 Message-Id: From: Oleg Verych Organization: Palacky University in Olomouc, experimental physics department X-OS: x86_64-pc-linux-glibc-debian Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Mon, 10 Sep 2007 14:39:34 +0100 * Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 > > On Mon, 10 Sep 2007 16:20:42 +0300 > Sami Farin wrote: > >> On Mon, Sep 10, 2007 at 13:59:12 +0100, Alan Cox wrote: >> > Will RMK (rmk@arm.linux.org.uk) please fix his email setup otherwise I >> > can't send serial/tty/arm stuff to him. >> > >> > "<<< 550 You have no reverse DNS; please try again when you have resolved >> >> Well, outpipe-village-512-1.bc.nu is NXDOMAIN. >> It should have A record 81.2.110.250. > > I've yet to see a specification which requires this. This is very brutal way of doing things, that somebody forced to do against unwilling e-mails. I have it enabled in exim also as an experiment (thus, see reply-to/mail-follow-up). It doesn't stop, but reduces spam. Especially this is wrong WRT mailing list. That's why i've proposed * trivial checking for `in-reply-to/references' (SHOULD in rfc2822) (see, wizard -- no hands!) * starting new threads will require valid ticket-requesting message first (as part of patch bomb of something like that, for instance). My experiments show, that spam doesn't have any hint of mail header magic, only stupid ms outlook stuff. Thus i don't think that idea is very insecure and all that kind of things. Conversely developers like Alan will not spend time and energy arguing about `modern ways of dealing with reality' :) -- -o--=O`C #oo'L O <___=E M