From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 6 Sep 2001 13:03:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 6 Sep 2001 13:02:56 -0400 Received: from sal.qcc.sk.ca ([198.169.27.3]:62730 "HELO sal.qcc.sk.ca") by vger.kernel.org with SMTP id ; Thu, 6 Sep 2001 13:02:44 -0400 Date: Thu, 6 Sep 2001 11:03:02 -0600 From: Charles Cazabon To: linux-kernel@vger.kernel.org Subject: Re: notion of a local address [was: Re: ioctl SIOCGIFNETMASK: ip alias bug 2.4.9 and 2.2.19] Message-ID: <20010906110302.B2323@qcc.sk.ca> Mail-Followup-To: linux-kernel@vger.kernel.org In-Reply-To: <20010906203854.A23109@castle.nmd.msu.ru> <20010906164314.74F68BC06C@spike.porcupine.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: <20010906164314.74F68BC06C@spike.porcupine.org>; from wietse@porcupine.org on Thu, Sep 06, 2001 at 12:43:14PM -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Wietse Venema wrote: > > An SMTP MTA is required to correctly recognize user@[ip.address] > as local. That's the rules, like it or not. These address forms > are actually being used, like it or not. Yes. MTAs have to work around this; qmail does a reasonable job. Why not look at how djb does this? See ipme.c. > It also is desirable for an MTA to treat clients on local subnets > different than strangers that happen to be on the same class A, > like it or not. Failure to do so can make one end up on black > lists, like it or not. Having an MTA automatically treat clients on "local subnets" differently than the rest of the 'net at large is definitely _not_ desirable. The administrator should have to explicitly configure the MTA to grant additional access to every subnet he desires; anything else is begging for trouble in the form of absued relaying privileges. Charles -- ----------------------------------------------------------------------- Charles Cazabon GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/ -----------------------------------------------------------------------