[imp] IMP displays both Plaintext and HTML

Wed Aug 29 10:18:22 UTC 2012

>> Any other suggestions to fix this problem? This is kind of a show
>> stopper for us. We'll probably have to delay our migration to Horde 4
>> if we can't find out whether this is a bug or some misconfiguration on
>> our side.
>
> If the message format is correct, then your IMAP server is returning
> invalid data. If you can provide a message source of such a message, and
> an IMAP log of loading such a message, we could maybe tell you more.

Sure, I've attached a sample HTML message generated by Horde4 and the 
IMAP log of the message. I removed stuff from the IMAP which seemed to 
be related to other private messages, if you need the complete log I can 
send it to you privately.
-- 
IKM-Serviceteam der Philosophischen Fakultät
HHU Düsseldorf
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Date: Wed, 29 Aug 2012 12:01:13 +0200
Message-ID: <20120829120113.Horde.emKOee0spPtQPehpjkFgqAA at webmail2.phil-fak.uni-duesseldorf.de>
From: Jens Pranaitis <pranaitis at phil-fak.uni-duesseldorf.de>
To: pranaitis at phil.hhu.de
Subject: this is a html sample message
User-Agent: Internet Messaging Program (IMP) H4 (5.0.23)
Content-Type: multipart/alternative; boundary="=_G5O9Bu0spPtQPehpjiMQqAA"
MIME-Version: 1.0
X-Virus-Scanned: ClamAV using ClamSMTP

This message is in MIME format.

--=_G5O9Bu0spPtQPehpjiMQqAA
Content-Type: text/plain; charset=ISO-8859-1; format=flowed; DelSp=Yes
Content-Description: Plaintext Message
Content-Disposition: inline

Hey,
this is just a test.

--=_G5O9Bu0spPtQPehpjiMQqAA
Content-Type: text/html; charset=ISO-8859-1
Content-Description: HTML Message
Content-Disposition: inline

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body style="font-family:Arial;font-size:14px">
<p><br>
Hey,<br>
this is just a test.</p>
</body>
</html>
--=_G5O9Bu0spPtQPehpjiMQqAA--