I'm using OE6 (6.00.2800.1123) on Win2K SP4, everything is up to date.
When I send an email with a pdf attached, it is being attached with the
headers:
Content-Type: application/pdf;
name="200411SB1043-S-0.pdf"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename="200411SB1043-S-0.pdf"

When this email is received by a Hotmail recipient, the pdf is corrupt. I've
compared the original and received pdf, and certain lines of data are being
truncated. Hence the corruption.

I've checked, and as expected other binary attachments are being encoded in
base64. Admittedly, Hotmail is the only client that appears to corrupt the
file, but this encoding behaviour shouldn't be occuring. A PDF not always,
but will often contain binary data, and should be encoded in base64 to get
around this type of problem.

Many thanks
John