In Legacy Exchange Server we could choose the level of permission per user.
With Exchange Server 2010 calendar permissions can be managed using the *-MailboxFolderPermission cmdlets. While these cmdlets can be used to manage permissions on any mailbox folder, we`ll focus on calendar permissions.
4 MailboxFolderPermission cmdlets in Exchange Server 2010:
Since I`ll be focusing on managing default permissions, which is an existing ACL on the calendar folder, we need to use the Set-MailboxFolderPermission cmdlet:
To grant “Reviewer”-permissions for the “Default” user, we would run the following:
Some companies have a policy that everyone must share their calendars with all users. Since it`s now possible to manage calendar permissions using PowerShell, I`ve written a script to accomplish this task; Set-CalendarPermissions.ps1.
While this script could be scheduled to run on a regular basis, a better approach for managing calendar permissions for new mailboxes are the use of the Scripting Agent which is a part of the Cmdlet Extension Agents, a very useful feature introduced in Exchange Server 2010.
Pat Richards has posted an excellent post on how to automatically modify new mailboxes using the Scripting Agent.