[Mimedefang] OT: blocking certain combo

[Adam Beatham]

Hello all,

I know this is totally off-topic, but you all are so helpful that I figure 
you might have an easy solution.

Is there an easy way to block a certain combination of To/CC

i.e.

To:  someone at where.com
Cc: adam at backboard.org

I don't want to block both addresses, I just want to block the combination 
of the two.  Anyone know how to do that?

Thanks in advance!

-adam ...the guy behind the guy behind the guy