From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/35009
Path: main.gmane.org!not-for-mail
From: "Jason R. Mastaler" <jason@mastaler.com>
Newsgroups: gmane.emacs.gnus.general
Subject: Re: `user-mail-address' for message-ids
Date: 27 Feb 2001 10:28:15 -0700
Sender: owner-ding@hpc.uh.edu
Message-ID: <puipug4nihc.fsf@cyan.acl.lanl.gov>
References: <20010223133030.B14991@mastaler.com>
	<m3elwpi07k.fsf@multivac.student.cwru.edu>
	<puid7c9c9y7.fsf@mastaler.com>
	<m31ysphvj5.fsf@multivac.student.cwru.edu>
	<pui4rxlc8ij.fsf@mastaler.com>
	<vafhf1knv10.fsf@lucy.cs.uni-dortmund.de>
	<ilupug8qc1j.fsf@barbar.josefsson.org>
NNTP-Posting-Host: coloc-standby.netfonds.no
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: main.gmane.org 1035170824 748 80.91.224.250 (21 Oct 2002 03:27:04 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Mon, 21 Oct 2002 03:27:04 +0000 (UTC)
Return-Path: <owner-ding@hpc.uh.edu>
Original-Received: from lisa.math.uh.edu (lisa.math.uh.edu [129.7.128.49])
	by mailhost.sclp.com (Postfix) with ESMTP id 49ED2D049D
	for <jason@mastaler.com>; Tue, 27 Feb 2001 12:29:38 -0500 (EST)
Original-Received: from sina.hpc.uh.edu (lists@Sina.HPC.UH.EDU [129.7.3.5])
	by lisa.math.uh.edu (8.9.1/8.9.1) with ESMTP id LAB21666;
	Tue, 27 Feb 2001 11:28:51 -0600 (CST)
Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Tue, 27 Feb 2001 11:27:56 -0600 (CST)
Original-Received: from mailhost.sclp.com (postfix@66-209.196.61.interliant.com [209.196.61.66] (may be forged))
	by sina.hpc.uh.edu (8.9.3/8.9.3) with ESMTP id LAA12327
	for <ding@hpc.uh.edu>; Tue, 27 Feb 2001 11:27:46 -0600 (CST)
Original-Received: from acl.lanl.gov (acl.lanl.gov [128.165.147.1])
	by mailhost.sclp.com (Postfix) with ESMTP id B7544D04A1
	for <ding@gnus.org>; Tue, 27 Feb 2001 12:28:17 -0500 (EST)
Original-Received: from cyan.acl.lanl.gov (root@cyan.acl.lanl.gov [128.165.147.151]) by acl.lanl.gov (8.8.8/8.8.5) with ESMTP id KAA9036704; Tue, 27 Feb 2001 10:28:15 -0700 (MST)
Original-Received: (from jasonrm@localhost)
	by cyan.acl.lanl.gov (8.9.3/8.8.8) id KAA30801;
	Tue, 27 Feb 2001 10:28:15 -0700
Original-To: ding@gnus.org
In-Reply-To: Simon Josefsson's message of "24 Feb 2001 17:30:00 +0100"
User-Agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Cuyahoga Valley)
Precedence: list
X-Majordomo: 1.94.jlt7
Original-Lines: 15
Xref: main.gmane.org gmane.emacs.gnus.general:35009
X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:35009

Simon Josefsson <simon@josefsson.org> writes:

> People who use default Linux installations (at least RedHat) and DHCP
> will also get a domain part of "localhost.localdomain".

[...]

> So the only "random" part that make Message-Id unique are time.  Not
> good, I think.

Right.  So it still seems that the first part of the Message-ID
(before @) should be enough to guarantee uniqueness if done correctly.
Perhaps if it was a combination of random time, and an aggregate of
username and numeric userid, then it would not matter if
`user-mail-address' was used for the second part of the ID.  Right?