Deny users right to delete own meetings in room mailbox

Question

Hi there.
I have a room mailbox where i need to deny users the right to delete/edit meetings that they have created.
The rights on the mailbox are like this at the moment
Kalender is the danish word for calender ;-)
[PS] C:\>get-mailboxfolderpermission -identity "Roommailbox":\kalender
RunspaceId   : 7634b87a-f0e0-40f7-9ced-165092cd99e2
FolderName   : Kalender
User         : Default
AccessRights : {Reviewer}
Identity     : Default
IsValid      : True
RunspaceId   : 7634b87a-f0e0-40f7-9ced-165092cd99e2
FolderName   : Kalender
User         : Anonymous
AccessRights : {None}
Identity     : Anonymous
IsValid      : True
RunspaceId   : 7634b87a-f0e0-40f7-9ced-165092cd99e2
FolderName   : Kalender
User         : F-Lon
AccessRights : {Editor}
Identity     : F-Lon
IsValid      : True
Is it possible to do this?

Answer 1

Hi Jesper,
According to your further description, I now understand that the requirement is that you want to deny users cancel meeting in their own calendar instead of directly deleting items in room mailbox. But canceling a meeting is a default right for users who
is the organizer of this meeting and it is by design.
I have tried to create a transport rule as a workaround to reject canceled meeting message transport in my test environment:
Apply rule to messages
Sent to ‘[email protected]’
  And when the Subject field contains
‘Canceled’
  And if the message type is ‘Calendaring’
Send ‘cannot cancel this meeting’ to sender with
‘5.7.1’
Except when the message if from ‘[email protected]’
But it failed, it could reject the meeting being deleted from the room mailbox but it deleted all meeting information in attendees’ and organizer’s calendar.
Therefore, it cannot be achieved to deny users to manage their own meetings as an organizer. Maybe we need to find another ways to manage your summerhouse.
Best regards,
Winnie Liang
TechNet Community Support