Yes.  If you are the owner of the public folder (PF) you can:

- Right click the PF
- Select Properties
- Select the Administration Tab

There is a button that allows you to make RULES on the public
folder. Just poke around in there and you'll see the forward rule.

As an FYI, this is really an EXCHANGE question, you may
want to address the Exchange groups with PF questions in the
future.

Nikki Peterson