Create a Mail Enabled Public Folder with auto reply and forwarding!

From Outlook create a public folder and make it for Mail and Post Items.

Open Exchange System Manager (ESM) and drill down on the left hand side through Admin Group-First Admin Group-Folders-Public Folders. Right click on the folder you have just created in the LEFT pane. When the dialog box opens after you right click, select All Tasks-Mail Enable. You will need to wait a few minutes for Exchange to make the changes.

Next right click on the folder again and choose properties and open the email address tab. Make sure the correct address is now populated. If for some reason the address is not there make sure you do not already have a group or user with the name of the folder you have just created.

Next create an email distribution group that you would like messages forwarded to.

Next in Outlook find the Public folder you have created and right click it to select the properties. In the properties of the folder select the administration tab and choose "Folder Assistant." This is where you create the rules to forward, reply or delete messages.

Select Add rule and pick the type of rule you would like to like to setup.
This example is to forward messages:

Select "Sent To" and select the mail enabled folder we have created, then click the box to forward the message and select your user or group you would like the messages forwarded to.