Größe von Office 365 Mailboxen limitieren

#Finding Mailboxes with a limit greater than 90 GB
$Mailboxes= Get-Mailbox -ResultSize unlimited | where {$_.ProhibitSendQuota -gt "90 GB"} | where {$_.RecipientType -eq "UserMailbox"}  

#Which Mailbox uses more than 2 GB 
foreach ($Mailbox in $Mailboxes)
	{
		
        $ItemSize = Get-MailboxStatistics $Mailbox.Alias |fl Alias,displayname,totalitemsize
		if ($Itemsize.TotalItemSize -gt "2 GB")  
			{
				echo $Mailbox.Alias + " " + $Itemsize.TotalItemsize >>D:\DecreaseMailbox.log  
			}
	}