Question Can I get the list of mailboxes which are over storage quota quickly? Answer You can get it using Power Shell: Get-MailboxStatistics | Where {"IssueWarning","ProhibitSend","MailboxDisabled" -Contains $_.StorageLimitStatus} | Format-Table DisplayName,TotalItemSize,StorageLimitStatus More Information: Get-MailboxStatistics http://technet.microsoft.com/zh-cn/library/bb124612(EXCHG.80).aspx A Day in the Life of an Exchange Administrator http://technet.microsoft.com/en-us/library/bb738403(EXCHG.80).aspx