[Mimedefang] Latest Worms and IE Exploits

[Stefan Schoeman]

> However, I like to keep File::Scan up-to-date so that graphdefang shows
> these as viruses, so I get a good count.  The Sobig.f numbers were quite
> impressive.

Not so the W32/MiMail figures. File::Scan totally failed to pick those up.
And the extension filtering was no good because it sent a zip file :(
Had to use clamav to catch the MiMail and the message.zip filename trick.