Exim Pipe Programming

I'm using CPanel with Exim running on my server.

I need to add a new e-mail account, say "service@domain.com". Messages sent to this address should arrive to different e-mail accounts depending on sender evaluation.

So, if a message is received by "service@domain.com" from "user@mail.com" I need to check on my database if the sender's e-mail address already exists and if it's assigned to some of the operators, then pipe the message to the operator's e-mail address, else, the message would be sent to a randomly chosen operator.

I have created a forward on CPanel, where "service@domain.com" points to "|/home/user/pipe.pl" where pipe.pl is the file i have created to perform the database lookup.

Now I'm stuck on the way I should return the pipe_address to Exim.