[Mimedefang] Rebuild Message before running SpamAssassin

[Guido]

Hi all,

I'm having some issues with trying to scan some emails I have coming in. 
Apparently SpamAssassin (I'm running 2.63) likes to ignore all parts that are 
not set as text parts (I'm using a rawbody rule and I've also tested with a 
full rule).

The problem is that I want it to also scan textual attachments which have the 
content-type application/octet-stream. I've tried changing the content type 
in filter() with calling action_rebuild() as well. This works, as in it does 
change. However, I believe MIMEDefang rebuilds the message after having 
called filter_end() and hence after it has been passed through 
SpamAssassin... while I need to have it rebuild *before* it is handed to 
SpamAssassin.

So might there be anyone on this list who knows a trick, has an idea or some 
pointers to help me on my way? :)

Many thanks in advance!

Kind regards,

Guido