[Mimedefang] PDF spam

[Kevin A. McGrail]

Good idea.  I'm running with that just as an SA rule to see how effective it 
is.

> Ergo, we look for hits on
> the GMD_PDF_EMPTY_BODY and GMD_PDF_ENCRYPTED rules and reject with a
> message to include body text when sending an encrypted PDF.  This
> particular check will probably be obsolete within a few days but it sure
> has worked out since we implemented it.