We have shared resource on Exchange Online [Office 365]. Using Coexistence Manager for Exchange [CMN] we are able to see free/busy time, we are able to send invitations in however AutoAccept doesn’t work for Lotus Notes users. AutoAccept was working for existing Exchange users.
AutomateProcessing is set to AutoAccept, but works only for Exchange users.
Running the PowerShell command:
Get-CalendarProcessing -Identity "NB-EPM" gives the following result
Identity AutomateProcessing
-------- ------------------
RoomName AutoAccept
Share permissions for calendar in the Resource mailbox is set to All Users
This was caused by External meeting invites not enabled to be AutoProcessed.
To resolve this issue the following commands need to be run via PowerShell on Exchange site:
set-CalendarProcessing -Identity "NB-EPM" -ProcessExternalMeetingMessages $True
Subsequently meeting invites sent by Lotus Notes users which include the Room Resource will be AutoProcessed correctly.
This solution might also apply to On-Premise Exchange.
