From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/88371
Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail
From: Eric Abrahamsen <eric@ericabrahamsen.net>
Newsgroups: gmane.emacs.gnus.general
Subject: Re: undisclosed-recipients
Date: Mon, 11 Feb 2019 11:10:45 -0800
Message-ID: <87mun2p2dm.fsf@ericabrahamsen.net>
References: <87sgwyv2gv.fsf@mat.ucm.es> <87pns0hld8.fsf@portable.galex-713.eu>
	<87va1sfdho.fsf@ericabrahamsen.net> <87pnrzlegr.fsf@mat.ucm.es>
	<878syn8np9.fsf@tullinup.koldfront.dk>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226";
	logging-data="21459"; mail-complaints-to="usenet@blaine.gmane.org"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)
To: ding@gnus.org
Original-X-From: ding-owner+M36580@lists.math.uh.edu Mon Feb 11 20:11:14 2019
Return-path: <ding-owner+M36580@lists.math.uh.edu>
Envelope-to: ding-account@gmane.org
Original-Received: from lists1.math.uh.edu ([129.7.128.208])
	by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.89)
	(envelope-from <ding-owner+M36580@lists.math.uh.edu>)
	id 1gtGz1-0005JF-AV
	for ding-account@gmane.org; Mon, 11 Feb 2019 20:11:11 +0100
Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu)
	by lists1.math.uh.edu with smtp (Exim 4.91)
	(envelope-from <ding-owner+M36580@lists.math.uh.edu>)
	id 1gtGyx-0006iq-LC; Mon, 11 Feb 2019 13:11:07 -0600
Original-Received: from mx1.math.uh.edu ([129.7.128.32])
	by lists1.math.uh.edu with esmtps (TLSv1.3:TLS_AES_256_GCM_SHA384:256)
	(Exim 4.91)
	(envelope-from <ding-account@m.gmane.org>)
	id 1gtGyt-0006g7-1X
	for ding@lists.math.uh.edu; Mon, 11 Feb 2019 13:11:03 -0600
Original-Received: from quimby.gnus.org ([80.91.231.51])
	by mx1.math.uh.edu with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256)
	(Exim 4.91)
	(envelope-from <ding-account@m.gmane.org>)
	id 1gtGyr-000617-7o
	for ding@lists.math.uh.edu; Mon, 11 Feb 2019 13:11:02 -0600
Original-Received: from [195.159.176.226] (helo=blaine.gmane.org)
	by quimby.gnus.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.89)
	(envelope-from <ding-account@m.gmane.org>)
	id 1gtGyn-0008Vb-Qn
	for ding@gnus.org; Mon, 11 Feb 2019 20:11:00 +0100
Original-Received: from list by blaine.gmane.org with local (Exim 4.89)
	(envelope-from <ding-account@m.gmane.org>)
	id 1gtGyl-0004wN-2Y
	for ding@gnus.org; Mon, 11 Feb 2019 20:10:55 +0100
X-Injected-Via-Gmane: http://gmane.org/
Cancel-Lock: sha1:cfVlLgLOtZE4kHYJvrBcPshzndY=
List-ID: <ding.gnus.org>
Precedence: bulk
Xref: news.gmane.org gmane.emacs.gnus.general:88371
Archived-At: <http://permalink.gmane.org/gmane.emacs.gnus.general/88371>

Adam Sjøgren <asjo@koldfront.dk> writes:

> Uwe writes:
>
>>> I always thought it was added automatically by a MTA somewhere if you
>>> left the To: field blank. I don't think anyone types it in there manually.
>>
>> Well not gnus.
>
> Like Eric Abrahamsen, I think that this bogus value
> "undisclosed-recipients" is inserted by Microsoft Exchange, Gmail or
> similar, when there is no To: field.

Also, I just checked my postfix installation, and apparently it's
something postfix also used to add by default, but now doesn't unless
you tell it to:

http://www.postfix.org/postconf.5.html#undisclosed_recipients_header