From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/44898 Path: main.gmane.org!not-for-mail From: Norman Walsh Newsgroups: gmane.emacs.gnus.general Subject: Re: Who sets Sender:? Date: Tue, 21 May 2002 09:43:35 -0400 Sender: owner-ding@hpc.uh.edu Message-ID: <873cwld3aw.fsf@nwalsh.com> References: <87bsbak1ws.fsf@nwalsh.com> <02May20.171937edt.119286@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 1021988675 20902 127.0.0.1 (21 May 2002 13:44:35 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Tue, 21 May 2002 13:44:35 +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 17A9wJ-0005R1-00 for ; Tue, 21 May 2002 15:44:35 +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 17A9wI-0000Mk-00; Tue, 21 May 2002 08:44:34 -0500 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Tue, 21 May 2002 08:44:53 -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 IAA09211 for ; Tue, 21 May 2002 08:44:41 -0500 (CDT) Original-Received: (qmail 23308 invoked by alias); 21 May 2002 13:44:17 -0000 Original-Received: (qmail 23303 invoked from network); 21 May 2002 13:44:17 -0000 Original-Received: from dc-mx04.cluster1.charter.net (209.225.8.14) by gnus.org with SMTP; 21 May 2002 13:44:17 -0000 Original-Received: from [68.112.234.9] (HELO mercury) by dc-mx04.cluster1.charter.net (CommuniGate Pro SMTP 3.5.9) with ESMTP id 15618657 for ding@gnus.org; Tue, 21 May 2002 09:43:16 -0400 Original-Received: from ndw by mercury with local (Exim 3.35 #1 (Debian)) id 17A9vL-0005QN-00 for ; Tue, 21 May 2002 09:43:35 -0400 Original-To: "(ding)" X-URL: http://nwalsh.com/ In-Reply-To: <02May20.171937edt.119286@gateway.intersystems.com> (Stainless Steel Rat's message of "Mon, 20 May 2002 17:24:30 -0400") Original-Lines: 66 User-Agent: Gnus/5.090007 (Oort Gnus v0.07) Emacs/21.1 (i686-pc-linux-gnu) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:44898 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:44898 / Stainless Steel Rat was heard to say: | * Norman Walsh on Mon, 20 May 2002 | | When I send mail, the Sender: goes out as "ndw@mercury", but | | (message-make-sender) returns "ndw@nwalsh.com". Why isn't | | sender set to message-make-sender? | | Because then a Sender header would be unnecessary. From and Sender should | never have the same mailbox. | | Sender contains the mailbox of the agent responsible for submitting the | message to the network (MTA). The idea is that while the originator | mailbox may be ndw@nwalsh.com, the Sender is the local user on the local | machine. Ok, fair enough. So this presents an interesting conundrum. In my case, the "local machine" has no name. I'm on a laptop behind a firewall attached to a cable provider that generates a "random" IP address via DHCP. So, on my local subnet (192.168.1.*), "mercury" is this laptop. But there's no global name for it. I can't claim that it's 'mercury.nwalsh.com' because no such machine exists in DNS. I can't claim that it's n206.cableprovider.net (or whatever the name for the DHCP provided address is) because that's on the other side of the firewall (and anything sent to it gets dropped on the floor anyway). So my messages go out with Sender: ndw@mercury Fine. I could care less, really. But it turns out that some random router inside the corporate firewall sometimes "adjusts" this for me, so that recipients see, for example: Sender: ndw@mercury.ireland.mycorp.com Which strikes me as really wrong. I could: 1. Ignore it. 2. Report this as an error to the IT folks at mycorp, if in fact they're wrong to fux with my Sender: header. (Yeah, that's going to be really productive :-) 3. Suppress Sender: as Matt suggested. 4. ...? Be seeing you, norm -- Norman Walsh | This mortal life is a little thing, http://nwalsh.com/ | lived in a little corner of the earth; | and little, too, is the longest fame to | come--dependent as it is on a | succession of fast-perishing little men | who have no knowledge even of their own | selves, much less of one dead and | gone.--Marcus Aurelius