[ mailman-Bugs-1337731 ] Content-Transfer-Encoding header missing

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Bugs item #1337731, was opened at 2005-10-25 18:37
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Category: mail delivery
Group: 2.0.x
Status: Open
Resolution: None
Priority: 5
Submitted By: DrV (i_am_drv)
Assigned to: Nobody/Anonymous (nobody)
Summary: Content-Transfer-Encoding header missing

Initial Comment:
When sending a digest, Mailman 2.0.9 doesn't include a
Content-Transfer-Encoding header, yet it seems to
encode the messages with quoted-printable.  As per IRC
2045:
  "Content-Transfer-Encoding: 7BIT" is assumed if the
Content-Transfer-Encoding header field is not present.

In particular, =## sequences are included, which are
not decoded correctly by mail readers (tested with
Mozilla Thunderbird), because the
Content-Transfer-Encoding does not specify
quoted-printable.

The digests include correct MIME version and
Content-type headers, but Content-Transfer-Encoding has
been missing in all cases I have seen.

Example:
------------
>From - Tue Oct 25 12:01:55 2005
X-Account-Key: account2
X-UIDL: 406934627
X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
Received: from lists-outbound.sourceforge.net
[66.35.250.225] by wwimail002.winsdns.com with ESMTP
  (SMTPD32-8.15) id A05B2BFF00F0; Tue, 25 Oct 2005
01:19:23 -0400
Received: from projects.sourceforge.net
(sc8-sf-list2-b.sourceforge.net [10.3.1.8])
	by sc8-sf-spam1.sourceforge.net (Postfix) with ESMTP
	id E7BDE88948; Mon, 24 Oct 2005 22:20:05 -0700 (PDT)
Date: Mon, 24 Oct 2005 22:09:26 -0700
From: freedos-devel-request at lists.sourceforge.net
Subject: Freedos-devel digest, Vol 1 #668 - 4 msgs
X-Mailer: Mailman v2.0.9-sf.net
MIME-version: 1.0
Content-type: text/plain
To: freedos-devel at lists.sourceforge.net
Sender: freedos-devel-admin at lists.sourceforge.net
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Precedence: bulk
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Message-Id:
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-------------

I have only verified this for digests sent by
"X-Mailer: Mailman v2.0.9-sf.net" (for mailing lists of
sf.net projects).

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100103&aid=1337731&group_id=103