Hello, I have migrated my conference room resource mailboxes from Exchange 2003 to 2007 and configured them as Room Mailboxes. I want to make it so that my Outlook clients (2003) are forced to add the conference room attendee to their meeting requests as the 'Resources' attendee type. Currently they can add the conference rooms as any type, i.e. 'Required' or 'Optional' but I do not want to allow this. How can I restrict this? This page implies, in the feature comparison table, that this was possible with Outlook Direct Booking, but is unclear on whether it is possible with Exchange 2007 Resource Scheduling: http://msexchangeteam.com/archive/2007/05/14/438944.aspx Thank you.

“With these advantages in mind, some disadvantages of Direct booking include: Organizer must remember to designate resource as "Resource" and not "Required" or "Optional"” ---------Refer to <Exchange 2003 Auto Accept Agent vs. direct booking> Per my research, the booking feature can’t be reversed back in the exchange 2007 nativelyJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com