[qpsmtpd] how to accept msg and drop or redirect?

[a-rope . net-sub-qp]

I'm using forkserver 0.32. I've have a need to either drop or redirect
certain messages after accepting them. In other words, I do not want to
reject the connection, but I also do not want to make the delivery to the
provided recipient address.

I can identify certain factors in plugins I have now, and have set several
transaction notes. What can I do, specifically, to drop and/or send the
message to a new recipient, after testing for the notes, in a new or
existing plugin?

p.s. I can't set up a .qmail file for this, as the recipients are not
always local.

Thanks.