Hi, We have just migrated from Ex2003 to Ex2010. This has, in the main, gone through reletively easily. One issue I have though is that by default, all users were able to view each others calendars prior to migration and not after. I have tried running the following EMS commands that have sorted out the problem for the vast majority of users, but not all. get-mailbox -filter {customattribute1 -eq "Employee"} | ForEach-Object {add-mailboxfolderpermission $_":\Calendar" - User username@domain.com -AccessRights Reviewer} (I have also tried using set-mailboxfolderpermissions.... but no change.) So what I am asking is how to find out which mailboxes user@domain.com can access or alternatively, which mailboxes do not have user@domain.com in the access rights list. Any ideas appreciated.

Hi, Maybe you can use this way to help you check user’s permission on Calendars: 1.Create a CSV file named CalendarPermission, save it at this path “C:\CalendarPermission.CSV” Save the members ‘(which mailbox you want to check) identity in CSV file by this way: Identity identity1 identity2 identity3 … Then run these command in Exchange Management shell: $list=”================================================================” import-csv -path "C:\CalendarPermission.CSV"|foreach-object{ $_.identity $list get-mailboxfolderpermission -identity ($_.identity+":\Calendar")|select User, FolderName, AccessRights $list } After run these commands, you can find user have permission on which mailbox and what permission he have. Here is a related document for you: Get-MailboxFolderPermission http://technet.microsoft.com/en-us/library/dd335061.aspx Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi The-Yeti, How about the issue? If anything is unclear, please feel free to let me know. Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, Well, it isn't exactly pretty and trawling through 400 mailboxes isn't waht I guess the MS exams would call the least administrative effort, but it does indeed do the job. The created file includes the info I need so thanks. Have only just really started getting into the powershell thing, thought it was a bit of a nightmare at first but it is getting a little clearer now. Thanks for the help.

Oh, in case someone else is viewing this I created the CSV file using this command: get-mailbox -filter {customattribute1 = "Employee"} | export-csv c:\calendarpermission.csv

What you're looking to do is get reverse permissions (what other mailboxes a particular mailbox has access to) there is no one liner to do that in powershell. Here's a posting below using ews which I've used for 2007 in the past should still work for 2010. http://gsexdev.blogspot.com/2008/10/exchange-reverse-permission-audit.htmlJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com