Exchange Server 2007 Setup Wizard > Client Settings Page (RTM)
Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
Applies to: Exchange Server 2007
Use the Client Settings page to specify whether any client computers in your organization are running Microsoft Outlook 2003 or earlier. If you have client computers that are running Outlook 2003 or earlier and you select Yes, Exchange will create a public folder database on the Mailbox server. If all of your client computers are running Office Outlook 2007, public folders are optional in Exchange 2007. If you select No, Exchange will not create a public folder database on the Mailbox server. You can add a public folder database after installation is complete. For example, if you add client computers that are running Outlook 2003, and you need a public folder database, you can create a public folder database on the Exchange 2007 Mailbox server.
For More Information
For more information about how to create a public folder database, see How to Create a New Public Folder Database.