[Mimedefang] mimedefang letting some spams through...why?

[-]

--- On Tue, 2/2/10, Tony <tonj at freeuk.com> wrote:
> ----- Original Message ----- From: "-" <kd6lvw at yahoo.com>
> > Your problem is that SA is being called more than
> once.
> 
> ok thanks, do you mean every email is being scanned twice?
> how do you know that? 

There are SA-generated headers inserted into your messages that didn't come from MD.  SA called by MD cannot alter the message.