From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/44911 Path: main.gmane.org!not-for-mail From: Stainless Steel Rat Newsgroups: gmane.emacs.gnus.general Subject: Re: Who sets Sender:? Date: Tue, 21 May 2002 14:33:53 -0400 Organization: The Happy Fun Ball Brigade Sender: owner-ding@hpc.uh.edu Message-ID: <02May21.142858edt.119269@gateway.intersystems.com> References: <87bsbak1ws.fsf@nwalsh.com> <87d6vqtqnv.fsf@squeaker.lickey.com> <02May21.105936edt.119176@gateway.intersystems.com> <02May21.122206edt.119093@gateway.intersystems.com> NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1022006248 30081 127.0.0.1 (21 May 2002 18:37:28 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Tue, 21 May 2002 18:37:28 +0000 (UTC) Return-path: Original-Received: from malifon.math.uh.edu ([129.7.128.13]) by main.gmane.org with esmtp (Exim 3.33 #1 (Debian)) id 17AEVi-0007p4-00 for ; Tue, 21 May 2002 20:37:27 +0200 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 17AEUy-0002TX-00; Tue, 21 May 2002 13:36:40 -0500 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Tue, 21 May 2002 13:36:58 -0500 (CDT) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id NAA10255 for ; Tue, 21 May 2002 13:36:47 -0500 (CDT) Original-Received: (qmail 147 invoked by alias); 21 May 2002 18:36:23 -0000 Original-Received: (qmail 142 invoked from network); 21 May 2002 18:36:23 -0000 Original-Received: from gateway.intersys.com (HELO intersystems.com) (198.133.74.253) by gnus.org with SMTP; 21 May 2002 18:36:23 -0000 Original-Received: by gateway.intersystems.com id <119269>; Tue, 21 May 2002 14:28:58 -0400 Original-To: ding@gnus.org X-Attribution: Rat In-Reply-To: (prj@po.cwru.edu's message of "Tue, 21 May 2002 12:56:43 -0400") Original-Lines: 29 User-Agent: Gnus/5.090006 (Oort Gnus v0.06) XEmacs/21.1 (Cuyahoga Valley, i686-pc-linux) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:44911 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:44911 * prj@po.cwru.edu (Paul Jarc) on Tue, 21 May 2002 | But in your example of specifying one of your addresses in From and | another in Sender depending on where you happen to be sending from, | Sender provides no information not already available in Received - it | indicates not who did what, but where you did it from. So why bother? Because it was a contrived example, and not a good one. Here are the issues: 1. Sender is largely useless for mail except in limited circumstances. 2. RFC 2822 requires a Sender header be generated when the identities of the originator and sender differ. 3. RFC 2822 does not clearly define the identities of the various agents involved in mail handling. I choose to use a definition of "identity" that meets the criteria given by both RFC 2822 and RFC 1039(?, I always forget the Usenet RFC number), and place the onus on the system and network for proper configuration and masqerading when necessary. This has the manifold benefit of making every news and mail user agent work out of the box. -- Rat \ When not in use, Happy Fun Ball should be Minion of Nathan - Nathan says Hi! \ returned to its special container and PGP Key: at a key server near you! \ kept under refrigeration. That and five bucks will get you a small coffee at Starbucks.