Exhcange 2013 Calendar Permissions

Hi,

I need to clear the calendar permissions on all mailboxes, for all users in my 2013 Exchange server. The only 2 that should be remaining is the default user and anonymous. Is there a script to perfom such a task?

For example :
I have a script, that can go through all the mailboxes, but it only deals with the user that I provide. I need it to take all the users, for example from a text file and go through the process with each and every one.

Get-Mailbox | ForEach-Object {Remove-MailboxFolderPermission $_":\Kalender" -User $Allusers -Confirm:$false} -Confirm:$False

Any Ideas?
ht_compAsked:
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Simon Butler (Sembee)ConsultantCommented:
I am not aware of any script that can do what you want.
You would need to enumerate the permissions first using get-mailboxfolderpermission, then take the results from that and remove them.

Closest I can get is the example at the end of this blog posting:
http://careexchange.in/working-with-calendar-permissions-in-bulk-on-exchange-2010-sp2/

Simon.
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Jian An LimSolutions ArchitectCommented:
Let's write one
sorry, i don't have a working environment to test it so, if there is issues (assume it is hand coded so synxtax issue will be unavoidable ,) please let me know.
IF you know how it works, powershell is pretty much easy to understand anyway.

############

$mailboxes = Get-Mailbox -resultsize unlimited
 ForEach-Object ($mailbox in $mailboxes) {

$users = get-mailbox $mailbox | % {get-mailboxfolderpermission $_":\Calendar"}\  | ?
{$_.user -notlike "Default* -OR $_.user -notlike "Anony*"}}


if ($users -ne $null) {
Foreach-object  ($user in $users)
get-mailbox $mailbox | % {Remove-MailboxFolderPermission $_":\Kalender" -User $user -Confirm:$false}
}
}
0

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ht_compAuthor Commented:
Hi,

We tried to modify the script you provided, as it contained some slight errors, but now we are stuck at the last part of the script. The problem is with the $user value, as the user value must be either alias or smtp address but the $user contains Folder Name, User and Access Rights.

The slightly modified script at the moment:

$mailboxes = Get-Mailbox -resultsize unlimited
ForEach($mailbox in  $mailboxes) {

$users= get-mailbox $mailbox | % {get-mailboxfolderpermission $_":\Kalender"} | ? {$_.user -notlike "Default*" -AND $_.user -notlike "Anony*"}

if ($users -ne $null) {
Foreach  ($user in $users) {
get-mailbox $mailbox | % {Remove-MailboxFolderPermission $_":\Kalender" -User $user -Confirm:$false}
                                               }                
                                  }
}

And the error message:

Cannot process argument transformation on parameter 'User'. Cannot convert the "Microsoft.Exchange.Management.StoreTask
s.MailboxFolderPermission" value of type "Microsoft.Exchange.Management.StoreTasks.MailboxFolderPermission" to type "Mi
crosoft.Exchange.Management.StoreTasks.MailboxFolderUserIdParameter".
    + CategoryInfo          : InvalidData: (:) [Remove-MailboxFolderPermission], ParameterBindin...mationException
    + FullyQualifiedErrorId : ParameterArgumentTransformationError,Remove-MailboxFolderPermission
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Jian An LimSolutions ArchitectCommented:
great! add .user add the back will do.

Remove-MailboxFolderPermission $_":\Kalender" -User $user.User  -Confirm:$false
0
ht_compAuthor Commented:
Great solution - With the little modifications it worked very well.
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