This tip will walk you through creating a contact for all your Exchange 2007 users to share:

1. Open Exchange 2007 Management Console on the Small Business Server
2. Navigate to Recipient Configuration > Mail Contact
3. Click New Mail Conact on the Actions pane on the right
4. Select the new contact radio button and click next
5. Fill in the first and last name
6. Click edit for the external email address and enter a valid address
7. Click the new button on the confirmation page
8. Click the finish button when the creation is complete