We're running Exchange 2010 SP1 and have 3 meeting rooms (Room Mailbox). When I first set them up many months ago, it was configured to auto accept meeting requests but decline conflicts. It used to send an email back to the user stating that the room was already booked and their request had been declined. Something has changed now and I don't know what. I've read some other articles that suggest: Set-CalendarProcessing -Identity "Boardroom" -AutomateProcessing AutoAccept I've run that command a few times. The boardroom calendar actually does automatically accept requests, and if there is already a booking it deletes the new request, but it does not notify the user that their request has been declined. Can anyone suggest what may be wrong? Here's the output of the calendar settings: RunspaceId : xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxx AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 730 MaximumDurationInMinutes : 0 AllowRecurringMeetings : True EnforceSchedulingHorizon : False ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : False DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : False AddOrganizerToSubject : False DeleteNonCalendarItems : True TentativePendingApproval : True EnableResponseDetails : True OrganizerInfo : True ResourceDelegates : {} RequestOutOfPolicy : {} AllRequestOutOfPolicy : False BookInPolicy : {} AllBookInPolicy : True RequestInPolicy : {} AllRequestInPolicy : False AddAdditionalResponse : False AdditionalResponse : RemoveOldMeetingMessages : True AddNewRequestsTentatively : True ProcessExternalMeetingMessages : False RemoveForwardedMeetingNotifications : False MailboxOwnerId : contoso.com/Some OU/Boardroom Identity : contoso.com/Some OU/Boardroom IsValid : True Thanks in advance.

Hi Blake, I follow you command to test on a new created room mailbox (in my lab Exchange 2010 SP1), it works well (auto accept meeting requests but decline conflicts). Here is the calendar setting I get (after set it to AutoAccept): RunspaceId : b0b7f446-5ee1-42cb-ab7b-def9b7bc6f01 AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 180 MaximumDurationInMinutes : 1440 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : True DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : True AddOrganizerToSubject : True DeleteNonCalendarItems : True TentativePendingApproval : True EnableResponseDetails : True OrganizerInfo : True ResourceDelegates : {} RequestOutOfPolicy : {} AllRequestOutOfPolicy : False BookInPolicy : {} AllBookInPolicy : True RequestInPolicy : {} AllRequestInPolicy : False AddAdditionalResponse : False AdditionalResponse : RemoveOldMeetingMessages : True AddNewRequestsTentatively : True ProcessExternalMeetingMessages : False RemoveForwardedMeetingNotifications : False MailboxOwnerId : hub.test.com/Users/Room2 Identity : hub.test.com/Users/Room2 IsValid : True For your issue, I suggest you check the settings for a room mailbox (which can accept meeting requests but decline conflicts) on your Exchange Server, then follow it settings to set on room mailbox Boardroom. After you set it the same as other mailbox (which can work as normal), check whether the issue ( does not notify the user that their request has been declined) will occur or not. Here is a related document for you: Set-CalendarProcessing http://technet.microsoft.com/en-us/library/dd335046.aspx Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com

Hi Blake, Any updates on this issue? Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com

Hi Evan, Thanks for your suggestions so far. I've been really busy so haven't yet had a chance to test creating a new room mailbox and checking if it sends confirmations. I will try to get this done today or tomorrow and post back again. Regards, Blake

Something else you might want to check is the quota settings and status on those resource mailboxes. If they go over the send quota (it can happen if the defaults are fairly low, and the resources get lots of appointments), they can't send the acceptance emails. They get the over quota notifications, but the DeleteNonCalendarItems setting will cause them to get deleted immediately.[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "

Hi Blake, How about the issue, any updates? Thanks, Evan TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com