From owner-freebsd-questions@FreeBSD.ORG Mon Jul 26 14:06:06 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EF0E316A4CE for ; Mon, 26 Jul 2004 14:06:05 +0000 (GMT) Received: from dirg.bris.ac.uk (dirg.bris.ac.uk [137.222.10.102]) by mx1.FreeBSD.org (Postfix) with ESMTP id B223D43D1F for ; Mon, 26 Jul 2004 14:06:05 +0000 (GMT) (envelope-from Jan.Grant@bristol.ac.uk) Received: from mail.ilrt.bris.ac.uk ([137.222.16.62]) by dirg.bris.ac.uk with esmtp (Exim 4.34) id 1Bp679-00076J-KR; Mon, 26 Jul 2004 15:06:04 +0100 Received: from cmjg (helo=localhost) by mail.ilrt.bris.ac.uk with local-esmtp (Exim 4.34) id 1Bp677-0000eU-LX; Mon, 26 Jul 2004 15:06:01 +0100 Date: Mon, 26 Jul 2004 15:06:01 +0100 (BST) From: Jan Grant X-X-Sender: cmjg@mail.ilrt.bris.ac.uk To: Robert Storey In-Reply-To: <20040726211831.121c9df9.y2kbug@ms25.hinet.net> Message-ID: References: <20040726211831.121c9df9.y2kbug@ms25.hinet.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: Jan Grant X-Spam-Score: 0.0 X-Spam-Level: / cc: freebsd-questions@freebsd.org Subject: Re: implementing spf X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Jul 2004 14:06:06 -0000 On Mon, 26 Jul 2004, Robert Storey wrote: [on spf] > 1) Is the technology useful? > > 2) How does one implement spf on the server side? > > 3) How does one implement spf on the client side? > > I most interested in No. 3 above - specifically, is there anything that > I must do as an end-user to make use of spf? The answer to (3) directly is, "no"* - which is why SPF is so useful, since it doesn't require large (or any) changes to a user's clients (assuming you're not doing mailing list expansion via your MUA, which I believe some packages do). The SPF pages at pobox have all the details you could want, including pointers to various implementations. It's pretty simple and straightforward; furthermore, the license situation is positive. If the MARID stuff ends up encumbered with what RMS calls a non-free-software-compatible license then it's quite likely that it simply won't fly, regardless. SPF itself is in use right now, however. jan * if you're originating email from "offsite" (dialup lines etc.) then you may need to coordinate with your mail admin to ensure you're targeting the correct MSA. -- jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/ Tel +44(0)117 9287088 Fax +44 (0)117 9287112 http://ioctl.org/jan/ Donate a signature: http://ioctl.org/jan/sig-submit