I wanted to publicize a couple links regarding the Directory Synchronization Tool for Forefront Online Protection for Exchange (FOPE). From the administrator's guide: "The Directory Synchronization Tool (DST) 9.1 is an application that helps you keep your on-site Active Directory Domain Services and Microsoft Exchange Server environment synchronized with your Hosted Services network for use with Forefront Online Protection for Exchange (FOPE) Hosted Filtering and the Exchange Hosted Archive (EHA) Service."

To get the tool, go to Download the Microsoft Directory Synchronization Tool for 9.1.

The documentation is located at FOPE Directory Sync Tool.