How to flag SPAM in MS Exchange/Outlook using Mailscanner?

[Koopmann, Jan-Peter]

On  mailscanner-bounces at lists.mailscanner.info wrote: 

> Then create a custom rule to recognize the subject line that has been
> modified by MS and max the IMF score based on that.
> 
> I've been using MS with Exchange and IMF for quite some time now and
> it works like a hot damn. 

I am pretty sure this will not work or header lines. You can only do
custom weighting on subject line and the mail body. Am I wrong? If so
please tell me since I could really use it on header lines as well. :-)

Regards,
  JP