HTML not displaying in email

I have just noticed the same HTML problem <Mail.app v2.0.5 (746/746.2)>
running on a PMac G4 (Digital Audio) 10.4.3 - this didn't seem to happen with 10.4.2

(I do apologise for the length of this message - but maybe this is what is killing the MIME handling capacity of Mail in 10.4.3??)

Recently when I receive mail forwarded from my secretary who has been forwarded this from somewhere else, I get perhaps 28 lines displayed of a many line (IMPORTANT) message.
I have to browse the Raw Source and try and parse html by eye, which is fun, but I was rather hoping Mail could do the decoding for me for me.

I notice this (undisplayed error message) appears in the Raw Source - but I haven't seen this displayed - I just realise that some messages seem truncated, seem not to have the claimed attachments etc.

ERROR MESSAGE DISPLAYED ONLY IN RAW SOURCE
"This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible."

Hey, I just discovered that when I browse one of these truncated messages in Raw Source, Nothing Changes, i.e. my inbox preview and the opened message just show the first (approx) twenty eight lines, however, if I VIEW LONG HEADERS then the message is 100% displayed, and this effect is (sometimes) STICKY, such that when I re-select Default Headers, now the message is fully visible in the preview pane AND when fully opened. It isn't sticky for ALL messages, as I have to open the truncated messages individually and toggle the long headers ON/OFF in order to see the correct display. WORKAROUND! (I've just noticed that the workaround seems to fade after a few minutes - but it seems to work a bit!)

so we have a situation where Mail.app is not understanding MIME or not processing the correct header unless it is deliberately viewed.

I append here (one of) the entire mail messages that is displayed/handled badly by Mail.app

quote
Return-Path: <Agnes. @xxxx.xxx>
Original-Recipient: rfc822;David.@cheetah-1.xxxx.xxx
Received: from fred.xxxx.xxx (139.xx.xx.xx) by cheetah-1.xxxx.xxx (x.1.006)
id 4305FFA3001239A5; Fri, 18 Nov 2005 13:53:34 +0100
Received: from fred00.xxxx.xxx (fred00.xxxx.xxx [158.xx.xx.xx] (may be forged))
by fred.xxxx.xxx (LMC5614Ainternal) with ESMTP id jAICs2Ue012994; Fri, 18 Nov 2005 13:54:03 +0100 (MET)
Received: by fred00.xxxx.xxx with Internet Mail Service (x.5.x.72)
id <XAX0V5Y2>; Fri, 18 Nov 2005 13:54:02 +0100
Message-ID: <557E0B85B8BED811AA090008744EAC9604E61F2F@EX2ITxxxMBX02>
From: Agnes.@xxxx.xxx
To: ioannis. @xxxx.xxx, giovanni. @xxxx.xxx,
giuseppe. @xxxx.xxx, barbara. @xxxx.xxx,
fotios. @xxxx.xxx, marco. @xxxx.xxx,
annalia. @xxxx.xxx, pawel. r@xxxx.xxx,
lothar. @xxxx.xxx, Janice @xxxx.xxx,
Francesca. @xxxx.xxx, pravir. @xxxx.xxx,
carlo @xxxx.xxx, guido. @xxxx.xxx,
Jorge. @xxxx.xxx, joaquim. @xxxx.xxx,
marco. @xxxx.xxx, dieter. @xxxx.xxx, karl @xxxx.xxx,
Agnes. @xxxx.xxx, Marko. @xxxx.xxx, giles. @xxxx.xxx,
brian. @xxxx.xxx, rafal. @xxxx.xxx, adam @xxxx.xxx,
gareth. @xxxx.xxx, nicolas. @xxxx.xxx, alberto. @xxxx.xxx,
marcelo. @xxxx.xxx, serge. @xxxx.xxx, neil. @xxxx.xxx,
myriam. @xxxx.xxx, igor. @xxxx.xxx, Vitor. @xxxx.xxx,
OLIVER. f@xxxx.xxx, pavel. @xxxx.xxx, matthew @xxxx.xxx,
giuliano i@xxxx.xxx, zdenek. @xxxx.xxx, julian. @xxxx.xxx,
luigi. @xxxx.xxx, helen. @xxxx.xxx, roberto. @xxxx.xxx,
david. @xxxx.xxx, alois. r@xxxx.xxx, jonathan. @xxxx.xxx,
alberto. @xxxx.xxx, dario. @xxxx.xxx,
kostas. @xxxx.xxx
Subject: =?utf-8?B?Rlc6IFJFTUlOREVSICJEw6lvbnRvbG9naWUgZXQgSW50w6lncml0?=
=?utf-8?B?w6kiIA==?=
Date: Fri, 18 Nov 2005 13:53:57 +0100
Importance: high
X-Priority: 1
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2657.72)
Content-Type: multipart/mixed;
boundary="---- =_NextPart_00001C5EC3F.1BE6971E"

This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.

------ =_NextPart_00001C5EC3F.1BE6971E
Content-Type: multipart/alternative;
boundary="---- =_NextPart_00101C5EC3F.1BE6971E"


------ =_NextPart_00101C5EC3F.1BE6971E
Content-Type: text/plain;
charset="utf-8"

For your information.
Agnes

------ =_NextPart_00101C5EC3F.1BE6971E
Content-Type: text/html;
charset="utf-8"

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">
<TITLE>Message</TITLE>

<META content="MSHTML 6.00.2800.1522" name=GENERATOR></HEAD>
<BODY>

</BODY></HTML>

------ =_NextPart_00101C5EC3F.1BE6971E--

------ =_NextPart_00001C5EC3F.1BE6971E
Content-Type: message/rfc822
Content-Description: =?utf-8?B?Rlc6IFJFTUlOREVSICJEw6lvbnRvbG9naWUgZXQg?=
=?utf-8?B?SW50w6lncml0w6kiIA==?=

Message-ID: <0IQ500KSVHXPSI00@fred-ldp.xxxx.xxx>
From: anne @xxxx.xxx
To: Daniela. @xxxx.xxx, Regina. @xxxx.xxx,
Giuseppa. @xxxx.xxx, Ursula. @xxxx.xxx,
paola. @xxxx.xxx, Agnes. @xxxx.xxx, Laurence. @xxxx.xxx,
Chiara. @xxxx.xxx, Palmira. I@xxxx.xxx
Subject: =?utf-8?B?Rlc6IFJFTUlOREVSICJEw6lvbnRvbG9naWUgZXQgSW50w6lncml0?=
=?utf-8?B?w6kiIA==?=
Date: Fri, 18 Nov 2005 13:41:49 +0100
Importance: high
X-Priority: 1
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2657.72)
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
Content-Type: multipart/alternative;
boundary="---- =_NextPart_00301C5EC3F.1BE6971E"


------ =_NextPart_00301C5EC3F.1BE6971E
Content-Type: text/plain;
charset="utf-8"
Content-Transfer-Encoding: quoted-printable

=20

=20

Da diffondere.

Grazie.

AM

___ =20

From: Laura. @xxxx.xxx [mailto:Laura.@xxxx.xxx]=20
Sent: Friday, November 18, 2005 10:53 AM
To: Elda. @xxxx.xxx; Karin. @xxxx.xxx;
anne @xxxx.xxx; Uwe @xxxx.xxx; =
Elena. @xxxx.xxx;
Giovanna. @xxxx.xxx; Angela. @xxxx.xxx;
Pernille. @xxxx.xxx
Cc: Sylvie. @xxxx.xxx
Subject: REMINDER "D=C3=A9ontologie et Int=C3=A9grit=C3=A9"=20
Importance: High

=20

REMINDER=20

=20

This is to announce the "D=C3=A9ontologie et Int=C3=A9grit=C3=A9" (in =
French) course
presented by Ms. C. Vieco and which will be held on:

Thursday 24th of November 2005 in Building 6, room 6, from 9:00 till =
17:00.=20

=20

Registration to the course should be made directly at the following =
SYSLOG
WEB address:=20

=20
<http://www.xx.xx/di/syslog_formation/ ?co=
r_id
=3D181158>
http://www.xx.xxx/di/syslog_formation/application/newapplication.cfm?cor=
_id=3D
181158 (blue line)=20


------ =_NextPart_00301C5EC3F.1BE6971E
Content-Type: text/html;
charset="utf-8"
Content-Transfer-Encoding: quoted-printable


<html xmlns:v=3D"urn:schemas-microsoft-com:vml" =
xmlns:o=3D"urn:schemas-microsoft-com:office:office" =
xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns=3D"http://www.w3.org/TR/REC-html40">

<head>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Dutf-8">


<meta name=3DGenerator content=3D"Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<title>REMINDER "D=C3=A9ontologie et Int=C3=A9grit=C3=A9" =
</title>
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
p
{mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.2in 1.0in 1.2in;}
div.Section1
{page:Section1;}
/* List Definitions */
@list l0
{mso-list-id:1481926489;
mso-list-template-ids:1014424930;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
-->
</style>

</head>

<body lang=3DEN-US link=3Dblue vlink=3Dblue>



</body>

</html>

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------ =_NextPart_00001C5EC3F.1BE6971E--
end quote

many Macs 512k -> Mac Minis Mac OS X (10.4.3) Yes, I have Key Lime

many Macs 512k -> Mac Minis Mac OS X (10.4.3) Yes, I have Key Lime

Have you had the client forward you one of the emails that won't display for him? And if so, does it display for you? And if so, since you are using the same OS version, what is different between the setups?

Seems that bafflement is a good reaction! Would it be possible to have the client's customer send you one of the emails directly? 'Cos the immediate thought is that it might be something strange in the headers, and if the direct-to-you doesn't display properly tat would tend to confirm it.
AK

Sorry, misread your earlier post. I would next try comparing the raw source of the direct-to-you and one to the client, again looking at headers but also at mime boundaries etc.