HTML Injection ??

Hi,

I've been putting together a POP3 proxy and
on the rare occasion I get a real wreck of an envelope
in the message. Lot's of binary junk append to the
end of the attachment.

I've read about injecting message and was wondering
if this might be what's going on, of it's just your
basic junk e-mail message. Notice all the site names
embedded in the junk..

Image in the attachments group..

Thanks

John McTaggart