[Bug 1787690] Re: Mailman rejects multipart content from Gmail/android

[Jeremy Gregson]

Hi Mark -

First of all, thanks very much for getting back to me.  Secondly,
there's something I realised I didn't mention in the bug report, which
may count as a 'free pass' for you to handball the problem back - I'm
running Mailman 2.1.20 on Ubuntu 16, not Mailman 3.  I've put off
upgrading because I understand the move to v3 is a major architectural
change, and I have a lot of legacy lists and users to worry about.

Anyway - in the course of experimenting with the content filter
settings, I tried a number of options.  Finding a tip online from
someone else who identified different subtypes of multipart, I tried
adding multipart (without any subtype) to pass_mime_types.  When that
didn't work, I tried multipart* to see if there was such a thing as a
wildcard (I think I tried multipart% and multipart/* as well), but I
didn't try adding text/plain.

So, I've just done that - no dice.  When I send to the list from the
Gmail app on an Android phone with the pass_mime_types field completely
clear, mail gets to the list.  With the mime type set to your three
options, nothing gets through and nothing appears in the vette log -
which is consistent with the message having been so gutted by the
filtering process that there was nothing left to pass or reject.

I've attached an example of a message that gets through to the list with
pass_mime_types cleared, and is lost with the filtering turned on.  In
case the act of attaching it loses anything, the headers as received at
the list were:

Return-Path: <selenetest-bounces at lochac.sca.org>
X-Original-To: nico at jeremygregson.com
Delivered-To: nico at jeremygregson.com
Received: by mail.jeremygregson.com (Postfix, from userid 500)
	id 52C2F4021C; Mon, 27 Aug 2018 13:47:18 +1000 (AEST)
Received: from mail.lochac.sca.org (vmx20482.hosting24.com.au [163.53.249.53])
	by mail.jeremygregson.com (Postfix) with ESMTP id 36B0440215
	for <nico at jeremygregson.com>; Mon, 27 Aug 2018 13:47:18 +1000 (AEST)
Received: by mail.lochac.sca.org (Postfix, from userid 500)
	id E453E481FD5; Mon, 27 Aug 2018 13:48:12 +1000 (AEST)
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on
	vmx20482.hosting24.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-0.0 required=3.2 tests=BAYES_00,HTML_MESSAGE,
	MAILING_LIST_MULTI,MISSING_MIMEOLE,RDNS_DYNAMIC,SPF_HELO_PASS,URIBL_BLOCKED
	autolearn=no autolearn_force=no version=3.4.1
Received: from mail.lochac.sca.org (localhost [IPv6:::1])
	by mail.lochac.sca.org (Postfix) with ESMTP id 8B2F4481F89
	for <nico at jeremygregson.com>; Mon, 27 Aug 2018 13:48:12 +1000 (AEST)
X-Original-To: selenetest at lochac.sca.org
Delivered-To: selenetest at lochac.sca.org
Received: by mail.lochac.sca.org (Postfix, from userid 500)  id 9BA8F481FD5; Mon, 27 Aug 2018 13:48:10 +1000 (AEST)
Received: from mail.jeremygregson.com (203-217-61-26.perm.iinet.net.au
 [203.217.61.26])
 by mail.lochac.sca.org (Postfix) with ESMTP id 36E9A481F89  for <selenetest at lochac.sca.org>; Mon, 27 Aug 2018 13:48:10 +1000 (AEST)
Received: by mail.jeremygregson.com (Postfix, from userid 500)  id E964A4021C; Mon, 27 Aug 2018 13:47:13 +1000 (AEST)
Received: from [10.183.142.121] (unknown [1.144.228.246])  by mail.jeremygregson.com (Postfix) with ESMTPSA id 87B3940215  for <selenetest at lochac.sca.org>; Mon, 27 Aug 2018 13:47:13 +1000 (AEST)
Date: Mon, 27 Aug 2018 13:48:04 +1000
Message-ID: <40d9ef29-01e7-4e04-bc82-8abe1884594c at email.android.com>
X-Android-Message-ID: <40d9ef29-01e7-4e04-bc82-8abe1884594c at email.android.com>
To: selenetest at lochac.sca.org
Importance: Normal
X-Priority: 3
X-MSMail-Priority: Normal
MIME-Version: 1.0
Subject: [Selenetest] Test subject
X-BeenThere: selenetest at lochac.sca.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: <selenetest.lochac.sca.org>
List-Unsubscribe: <https://lochac.sca.org/mailman/options/selenetest>,
 <mailto:selenetest-request at lochac.sca.org?subject=unsubscribe>
List-Archive: <http://lochac.sca.org/pipermail/selenetest/>
List-Post: <mailto:selenetest at lochac.sca.org>
List-Help: <mailto:selenetest-request at lochac.sca.org?subject=help>
List-Subscribe: <https://lochac.sca.org/mailman/listinfo/selenetest>,
 <mailto:selenetest-request at lochac.sca.org?subject=subscribe>
From: Nico via Selenetest <selenetest at lochac.sca.org>
Reply-To: Nico <nico at jeremygregson.com>
Content-Type: multipart/mixed; boundary="===============8988888446188673456=="
Errors-To: selenetest-bounces at lochac.sca.org
Sender: "Selenetest" <selenetest-bounces at lochac.sca.org>

Any further suggestions will be appreciated.
Cheers,
Jeremy

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https://bugs.launchpad.net/bugs/1787690

Title:
  Mailman rejects multipart content from Gmail/android

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