conditional qconfirm-check based on "To" field?

I'd like to conditionally allow certain people to send me messages, 
unconfirmed, based on the "To" address they use.

While qconfirm can easily be taught which senders' addresses are 
acceptable and which are not, I cannot find a good way to tell 
qconfirm-check to pass through certain messages based on the address in 
the "To" field. Not all of these addresses share the same username or 
domain, so I can't use "user-extension" style .qmail files.

If I use the iftocc program found in the mess822 package, the best I can 
accomplish is a .qmail file like so:

| qconfirm-check -d homedir/.qconfirm iftocc [email protected]
./Maildir/

This functions rather well in the sense that qconfirm-check runs iftocc, 
and if the OK address is in either the "To" or "Cc" field, 
qconfirm-check will let the message through, which is very very close to 
being what I want.

Still, I need to be able to use qconfirm-check-mid to spot replies and 
followups to messages that I've sent. This complicates things incredibly.

Does anyone have a good example of a .qmail file that will conditionally 
run qconfirm-check and qconfirm-check-mid dependent on the address in 
the "To" field?


Toby