On 2018-11-24 15:16, Richard Damon wrote:
On 11/24/18 9:41 AM, André Rodier wrote:
Hello,

I have a program (SOGo), installed on my mail server, that send emails
using the quoted-printable encoding for From/To headers.

Unfortunately, none of the email clients I use seems to display them
correctly:

-------------------------------------------------------
From     =?utf-8?q?Andr=C3=A9?= Rodier <an...@rodier.me>
To     =?utf-8?q?Andr=C3=A9?= Rodier <an...@rodier.me>
-------------------------------------------------------

Is there any reason for that ?
is a header missing:

Thanks for your help

André Rodier

First, are your clients compliant with the RFC that define encoding of
headers (which are later/less supported than those that define the
encoding of the body)?

For example, RFC 2047  (I think the latest RFC that defines this
encoding). I don't think you need any header to enable this support,
just a compliant MUA.

Thanks for your answer.

I would think it is a bug in the SOGo software, because other emails are using quoted-printable too, but are displayed correctly, for instance this one:

------------------------------------------------------------------------
Return-Path: <an...@rodier.me>
Received: from osaka.rodier.me
        by osaka.office.pmc with LMTP id 0P2UH/1p+VvAFAAAnYgw/w
        ; Sat, 24 Nov 2018 15:10:53 +0000
Received: from osaka.rodier.me (localhost [127.0.0.1])
        by osaka.rodier.me (Postfix) with ESMTP id 6406A2063B
        for <an...@rodier.me>; Sat, 24 Nov 2018 15:10:53 +0000 (GMT)
Received: by osaka.rodier.me (Postfix, from userid 132)
        id 431B720662; Sat, 24 Nov 2018 15:10:53 +0000 (GMT)
Content-Type: text/html; charset="utf-8"
To: =?utf-8?q?Andr=C3=A9_Rodier?= <an...@rodier.me>
MIME-Version: 1.0
Date: Sat, 24 Nov 2018 15:10:53 +0000
Subject: The event =?utf-8?q?=22Hello=22?= was created
Message-ID: <1403-5bf96a00-5-79d0b280@98295310>
From: =?utf-8?q?Andr=C3=A9_Rodier?= <an...@rodier.me>
X-AV-Checked: ClamSMTP (Client IP: 127.0.0.1)
------------------------------------------------------------------------

Fortunately, Thunderbird, Evolution and Roundcube are behaving the same.


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