Only administrators can add, modify and delete Forwards. Normally the administrative account is the "postmaster" account. Since the postmaster is responsible for managing all accounts in the domain, it cannot be forwarded to another account, however you can have other names that forward to the postmaster.

Creating Forwards
You can create forwards by clicking on the create Add New Forward button in the Forwards screen, or by using the fast link on the main menu.

To create the forward, enter the name of the remote account that the mail is to be forwarded to. Then enter the local name of the forward. To save the new forward, click on the Add button on the Create Forward screen.

Deleting Forwards
To delete a forward, you click on the delete button in the Forwards screen. If a forward is deleted, only the forward name is deleted. The remote POP3 account will stay on its server and all email previously collected through the forward will still be there.

Modifying Forwards
To modify a forward, click on the modify button in the Forwards screen.

The Modify Alias and Forwards screen allows you add local POP3 accounts to the forward name or more remote addresses to the forward name.

Note that you can use forwards to send mail to multiple accounts. Effectivily, this can serve as a simple mailing list. If you have multiple addressees for a forward, you can also delete them from the Modify Alias and Forwards screen.

Example
  Forwarding Address: me@otherdomain.com
  Local Name: myforward

In this example you would already have the account "me@otherdomain.com" setup on a domain other than the one you are adding the forward to. Any mail sent to the "myforward" address will be forwarded to the other domain's "me" account.