MCSA/MCSE Self-Paced Training Kit (Exam 70-284): Implementing and Managing MicrosoftВ® Exchange Server 2003 (Pro-Certification)

Public folders must be mail-enabled before they can receive e-mail.

Public folders can be moved or copied within a public folder tree but not outside of the tree.

Only the Default public folder tree is available to Outlook users.

General Purpose public folder trees can be accessed by NNTP and HTTP clients but not by MAPI (Outlook and OWA) clients.

Client permissions for public folders can be configured in Exchange System Manager, or in Outlook for folders that are in the Default public folder tree.

Permissions in Exchange System Manager are rights-based, whereas permissions configured in Outlook are roles-based (though they accomplish the same thing).

A public folder store must be associated with a public folder tree. An unassociated public folder tree cannot be used, even though you can create public folders in it.