Mailboxes Over QuotaDescription
This script returns the names of the mailboxes that are over their quota limits.
One-Liner
get-MailboxStatistics | where {"IssueWarning","ProhibitSend","MailboxDisabled" -contains $_.StorageLimitStatus} | format-Table DisplayName,TotalItemSize
Disclaimer: The sample scripts are meant to serve as examples and may need modifications before they will work in your environment. The authors of the script are not responsible for any negative outcome that may result from using them.
| 
