This is probably something easy. I just converted our organization over from Lotus Notes (yes, we the last organization to still use that thing) to 2010. I've created room resources and added delagates using security group ie "DL delgates IT Rooms" can approve room reservations for IT rooms. When requests are made to delgates and they go to approve, they get an error that they don't have permissions to free/busy time. I've since gave the the security group full access to the room mailbox, which obviously works. My question is: Is that best practice? I would think a delegates would be able to access access free/busy without adding additional permission. Please let me know. Thanks.

Symptom: When add security group as the delegate to room mailbox, group members get error information when they try to approve the meeting request I can’t also approve the meeting request if security group has been added as delegate, which works after I’ve granted full access permission to the security group (Exchange 2010 RTM/SP1 + Outlook 2010 RTM) Error: “cannot open calendar folder for use room 1, the operation failed” I’ve reported the symptom, ‘ll post at here when I got further update Notes: Does anyone else in forum able to use security group as the delegate of room mailbox?James 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

I think i may be missing something fundamental, or within the setup of the Room mailbox, but when i try to add a delegate to the properties of the Room mailbox, i don't have the option to add a security group, only a distribution group.. If i add the mailbox to a user with full rights, you cannot change permissions. So in short, what are the steps you are using to set this up? Or how specifically are you adding the security group? Thanks, Kevin Ca - MSFTKevin Ca - MSFT