Messages and attachments not decoding properly in Outlook 2003

[DC]

A few emails I have received lately with attachments have not been decoding
properly. They come through as raw text without even having subjects or
sender info displayed. It seems to happen with HTML messages and things
encoded in base64 with the transfer encoding being quoted-printable. Here is
the only common links I have found in the raw text-


Content-Type: multipart/mixed;
boundary="--6c963a6c2aa62a54"
This is a multi-part message in MIME format.
----6c963a6c2aa62a54
Content-Disposition: inline
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable


Content-Type: multipart/mixed;
boundary="----=_NextPart_000_000E_01C64CF7.AB678880"
This is a multi-part message in MIME format.
------=_NextPart_000_000E_01C64CF7.AB678880
Content-Type: multipart/alternative;
boundary="----=_NextPart_001_000F_01C64CF7.AB678880"
This is a multi-part message in MIME format.
------=_NextPart_001_000F_01C64CF7.AB678880
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset="us-ascii";format=flowed

That's info from 2 of them. They both had base64 attachments. They both have
Content-Type: multipart/mixed; and Content-Transfer-Encoding:
quoted-printable. Is there any way to fix this issue? I can copy and decode
the files by hand, but with larger files it's a huge pain. Is it possible
that this is an ISP issue and not Outlook?

 

[DC]

Also, I notice it happens more often with a person on a Mac sending the
email.