From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 16442 invoked from network); 12 Dec 2020 22:29:16 -0000 Received: from mx1.math.uh.edu (129.7.128.32) by inbox.vuxu.org with ESMTPUTF8; 12 Dec 2020 22:29:16 -0000 Received: from lists1.math.uh.edu ([129.7.128.208]) by mx1.math.uh.edu with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1koDO3-007aiy-Vy for ml@inbox.vuxu.org; Sat, 12 Dec 2020 16:29:12 -0600 Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by lists1.math.uh.edu with smtp (Exim 4.94) (envelope-from ) id 1koDO3-00GxA9-Ca for ml@inbox.vuxu.org; Sat, 12 Dec 2020 16:29:11 -0600 Received: from mx1.math.uh.edu ([129.7.128.32]) by lists1.math.uh.edu with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1koDO1-00GxA1-Ey for ding@lists.math.uh.edu; Sat, 12 Dec 2020 16:29:09 -0600 Received: from w1.tutanota.de ([81.3.6.162]) by mx1.math.uh.edu with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1koDNz-007aii-B8 for ding@lists.math.uh.edu; Sat, 12 Dec 2020 16:29:09 -0600 Received: from w3.tutanota.de (unknown [192.168.1.164]) by w1.tutanota.de (Postfix) with ESMTP id 389EBFBB3BE for ; Sat, 12 Dec 2020 22:29:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1607812141; s=s1; d=tutanota.com; h=From:From:To:To:Subject:Subject:Content-Description:Content-ID:Content-Type:Content-Type:Content-Transfer-Encoding:Content-Transfer-Encoding:Cc:Date:Date:In-Reply-To:MIME-Version:MIME-Version:Message-ID:Message-ID:Reply-To:References:Sender; bh=meFili4/RHj9i/21/97MyFbL2FYEC1Q3Ec3y06+k66A=; b=Xa1l8SLMA1h8lMp/xAWQn1Cjgk2OS8bLkqcCStP1S8SLl8YFD7MId3zkYs4QGaig 9fwEZvHLjDzxRzYDmlnRrVVBK2xo4uGtp3Vw/6/1Wt7Y96YxMLfz6zsoBkAVyUJN8ik 1W6/3R/IDlLFnf2Ohe3TynKNVWiFMlwIi3H+bQTB2lZ/wVdqnYfwy1WcaJbs1mPYcHg w0FmqH9CexMP5HBOcyhJ4XuzeXGtvWghWJKDiV2EjVVwjQcOkoyoSB1G/P10jedkRHj 9IeVdE5LRXJNHvogRXX1eFsQTIhVNlG1vUwWrZlCxugCIjW/6BlRYVW0k87fU7Phcvr 81hm9uEWsw== Date: Sat, 12 Dec 2020 23:29:01 +0100 (CET) From: yarnton@tutanota.com To: ding@lists.math.uh.edu Message-ID: Subject: mail-host-address and i-did-not-set--mail-host-address--so-tickle-me MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable List-ID: Precedence: bulk Hi, As far as I understand, the function message-make-fqdn in gnus/message.el c= oncats the string "i-did-not-set--mail-host-address--so-tickle-me" to=C2=A0= system-name if that is not a fully qualified domain name. This is used to c= onstruct a unique Message-ID. To be a bit more precise, it also checks the values of user-mail-address an= d mail-host-address before defaulting to string with the "tickle-me" substr= ing. I used to use Gnus, but my MUA these days is Notmuch. Notmuch and other pac= kages use message.el, and I am trying to understand why I need to set up ma= il-host-address to something arbitrary (I use "gnu.org") in order to avoid = the "tickle-me" string. Is this a bug from Notmuch when calling message.el, some ancient setting fr= om Gnus that doesn't play well with other packages, or something I'm doing = wrong? In principle, I don't see why I need to set my email parameters in m= y .emacs. Those are a concern of Notmuch and MSTMP only. I think Message-ID should reveal as little information as possible these da= ys, as it can be used for identifying or at least fingerprinting messages. = Whenever I use Emacs from a device where the hostname returns a fully quali= fied name like an IP address, that will leak into my Message-ID. Is there a= ny technical reason for not constructing a random Message-ID like [UUID]@gn= u.org? Thanks.