[Exim] W32/Sircam worm

I just got around to actually testing (from netscape mail) the addition
of the lnk file extension I placed in the system filter and it isn't
rejecting... I thought all I needed to do was to add it to the list of
extensions like below?

(?:vb[se]|ws[fh]|jse?|exe|com|cmd|shs|hta|bat|scr|lnk....

It is rejecting the other extensions in my testing... what am I
missing? does it work for anyone else?

thanks,
-jm