Setting up Qmail to forward mail from one user to another
 

I am helping the system administrator for our local internet service provider set up qmail options on our server. We have it up and running just fine, but we are looking for a few "advanced" extra options to use for customers. Each customer has an account and we want to give them the option of setting up a forward address that all their mail in their account could be forwarded to. If there is a way to do this with the .qmail files or other configuration files, then we could wright scripts for them to change those setting throught the web. Thank you.