From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/22017 Path: main.gmane.org!not-for-mail From: Florian Weimer Newsgroups: gmane.emacs.gnus.general Subject: Re: Message-ID Date: 22 Mar 1999 08:41:02 +0100 Sender: owner-ding@hpc.uh.edu Message-ID: References: NNTP-Posting-Host: coloc-standby.netfonds.no Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1035160013 25906 80.91.224.250 (21 Oct 2002 00:26:53 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 21 Oct 2002 00:26:53 +0000 (UTC) Cc: ding@gnus.org Return-Path: Original-Received: from fisher.math.uh.edu (fisher.math.uh.edu [129.7.128.35]) by sclp3.sclp.com (8.8.5/8.8.5) with ESMTP id OAA13971 for ; Mon, 22 Mar 1999 14:06:43 -0500 (EST) Original-Received: from sina.hpc.uh.edu (lists@Sina.HPC.UH.EDU [129.7.3.5]) by fisher.math.uh.edu (8.9.1/8.9.1) with ESMTP id MAB07860; Mon, 22 Mar 1999 12:58:06 -0600 (CST) Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Mon, 22 Mar 1999 12:58:19 -0600 (CST) Original-Received: from sclp3.sclp.com (root@sclp3.sclp.com [204.252.123.139]) by sina.hpc.uh.edu (8.7.3/8.7.3) with ESMTP id MAA20906 for ; Mon, 22 Mar 1999 12:58:03 -0600 (CST) Original-Received: from delos.stuttgart.netsurf.de (delos.stuttgart.netsurf.de [194.163.56.1]) by sclp3.sclp.com (8.8.5/8.8.5) with ESMTP id NAA13828 for ; Mon, 22 Mar 1999 13:57:53 -0500 (EST) Original-Received: by delos.stuttgart.netsurf.de (Smail3.2.0.103/delos.LF.net) via LF.net GmbH Internet Services via remoteip 194.163.56.20 via remotehost cygnus.stuttgart.netsurf.de with esmtp for mailhost.sclp.com id m10P9t5-000S5xC; Mon, 22 Mar 1999 19:57:23 +0100 (MET) Original-Received: from deneb.cygnus.stuttgart.netsurf.de (deneb.cygnus.stuttgart.netsurf.de [192.168.0.1]) by cygnus.stuttgart.netsurf.de (8.8.7/8.8.7) with ESMTP id IAA01865; Mon, 22 Mar 1999 08:42:26 +0100 Original-Received: (from fw@localhost) by deneb.cygnus.stuttgart.netsurf.de (8.9.3/8.9.3) id IAA01642; Mon, 22 Mar 1999 08:41:02 +0100 Original-To: Harry Putnam In-Reply-To: Harry Putnam's message of "21 Mar 1999 21:07:18 -0800" Original-Lines: 14 User-Agent: Gnus/5.07008 (Pterodactyl Gnus v0.80) XEmacs/20.4 (Emerald) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:22017 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:22017 Harry Putnam writes: > Every time a discussion about What the RFCs have to say about how mail > headers look. I end up thoroughly confused. > > Its my understanding that the part of the message ID after the > ampersand is supposed to be a real pingable address. No, it's sufficient if it's a fully-qualified domain name. You don't need to have a DNS entry for the FQDN, but it's better if there's an MX record (for mail delivery). An A record (`pingable address') is certainly not required. Of course, the FQDN must be from a name space under your control, otherwise you can't guarantee the uniqness of the message IDs (which is required for news articles).