How to enable public folders

When you set up archiving for public folders, you add an Exchange Public Folder Task and assign to it one or more public folder root paths in the public folder hierarchy. You also specify a vault store for the task to use.

New public folders can be auto-enabled for archiving, with a new archive created automatically for each new public folder created under the specified root path.

This feature should be used with caution and only where the creation of public folders is strictly controlled.