Forwarding some mail recipients to other machine.

[Sebastian Wain]

I wish to receive the email from Internet in a machine (running qmail) and forward it 
(depending the receiver) to another machine, but leaving some recipients in the first 
machine.

How can I do it with qmail?
I know that I can forward all the mails to another machine using smtproutes, but I 
haven't found information about forwarding some recipients only.


Thank You
Sebastian Wain