[Exim] Body Size in Generic VBS Filter

Hello all around...

I've got a question concerning the generic filter from Nigel
Metheringham.
The filter uses the "body"-variable in the filter. While I was also
searching for a way to block viruses I thought I had found that only a
part of the message is really contained in that variable. The filter
thus
should fail on medium to large mails. Is this correct?

Richard