MS Outlook/Exchange mangling messages from KMail (and all other clients)

>MS Outlook's weird behaviour with in-line quoting is well known, but I
> haven't seen any comment on how it renders incoming mail containing
> in-line quotes. For the record, I've had complaints from MSOutlook users
> that e-mail I send with in-line quotes is misrendered.
> 
> For example: The quoting isn't honoured (the text just appears with the
> quote characters, while in-line quoted e-mail from MS sources is
> highlighted and indented). Line-width is frequently broken. The same
> pathology applies to messages sent in HTML.
> 
> Neither the system font, nor any font specified in the original e-mail in
> the case of HTML messages, is used; but rather than just appearing in
> Courier New, messages are rendered inconsistently in several different
> fonts. This appears to be the case for any and all non-MSOutlook clients -
> it happens to messages from mobile devices (iPhone, RIM, but also MS
> Windows Mobile), and to messages sent from Mozilla Thunderbird.
> 
> Exploring the problem, it looks like either MS Outlook is broken, or else
> MS Exchange Server is doing something to mail passing through it (there is
> a configuration option to apply MS Rich Text formatting to all
> messages...). Switching off everything suspicious (suppress line breaks,
> "save disk space by only keeping HTML necessary to display messages") in
> Outlook doesn't help.
> 
> I'm using KDE4.3 and OpenSUSE11.2, with KMail as the e-mail client within
> Kontact. Does anyone know of a fix on the sender side?

I've reviewed the source of the messages, it seems normal. I suspect that 
either Outlook or Exchange Server is reading the X-User-Agent string and 
misbehaving.

-- 
The only thing worse than e-mail disclaimers...is people who send e-mail to 
lists complaining about them

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