Hi,
be sure that the distributiongroup is also a security group. The "Set-MailboxFolderPermission" command only works when permissions are already set for calendar. For adding a new group/user you must use the "Add-MailboxFolderPermission".
I've wrote a short script which get all members of a distributiongroup and adds/sets permission for this distributiongroup on all groupmember-calendars:
# change to prefered accessrights (see "Get-Help Set-MailboxFolderPermission -Parameter AccessRights")
$accessrights = "ReadItems"
# set Identity to distributiongroup alias
$distributiongroup = Get-DistributionGroup -Identity sales
# normally no changing after this line
$groupmembers = Get-DistributionGroupMember -Identity $distributiongroup | Where-Object { $_.RecipientType -eq "UserMailbox" }
foreach ( $member in $groupmembers )
{
$permissions = ""
$mailbox = Get-Mailbox -Identity $member.alias
$calendar = (($mailbox.SamAccountName) + ":\" + (Get-MailboxFolderStatistics -Identity $mailbox.SamAccountName -FolderScope Calendar | Select-Object -First 1).Name)
foreach ( $perm in ( Get-MailboxFolderPermission -Identity $calendar ))
{
$permissions += @($perm.User.DisplayName)
}
if ( $permissions -contains $distributiongroup.Name )
{
# Distributiongroup already has permission groupmember calendar
Set-MailboxFolderPermission -Identity $calendar -User $distributiongroup -AccessRights $accessrights
}
else
{
# Distributiongroup has no permission to groupmember calendar
Add-MailboxFolderPermission -Identity $calendar -User $distributiongroup -AccessRights $accessrights
}
}
Save as powershell-script and change it for your needs before you run it!
It seems you've got a big exchange environment, so it's no bad idea to get in touch with powershell. Can save a lot of time! ;-)
Regards
Martin
