> 1) it's an invalid message -- says it's message/rfc822, but it's
> trying to be multipart.
>
> 2) due to #1, all of my MUA's don't display it at all.

I don't know.  I have 3 spams in the last month that *may* be doing
something weird here.

Case 1:

section of headers:
------- start of cut text --------------
Content-Type: text/plain;
        charset="Windows-1252"
Content-Transfer-Encoding: 7bit
Header2: X-Priority: 3
Header3: X-Mailer: QUALCOMM Windows Eudora Version 5.1
Header4: X-Priority: 3
Header5: X-Mailer:  PHP/4.1.2
Header6: X-MimeOLE:  Produced By Microsoft MimeOLE V6.00.2800.1165
Header7: X-Priority: 3
Header: Content-Type: message/rfc822
------- end ----------------------------

Not sure what that's about.  Probably a spamware misconfiguration.

Case 2 (two messages):

section of headers
------- start of cut text --------------
Content-Type: message/rfc822
Content-Type: text/html;
        charset="iso-8859-1"
Content-Description: 12 02 2004 22:29:06
Content-Disposition: inline
Content-Transfer-Encoding: quoted -printable
------- end ----------------------------

Two top-level Content-Type headers.  We should probably figure out what
common MUAs do in this case (as well as extra Content-Type headers in
MIME parts) and do the same thing (whatever it is).

Daniel

-- 
Daniel Quinlan                     anti-spam (SpamAssassin), Linux,
http://www.pathname.com/~quinlan/    and open source consulting

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