Exchange 2010 The mailbox dumpster size exceeds the target quota

Table of Contents

Moving some customers mail boxes around i kept getting a error about dumpster size exceeding the target quota.I couldn’t find much info on it. But this seems to fix it.
1.) Give your account rights to open the mailbox.
2.) Go to control panel > mail > profiles > ask for a profile each time outlook opens
3.) Open Outlook > New profile > input appropriate info for mailbox and users alias > UNCHECK “cached exchange mode” > open the users mailbox once w/ Outlook, then close Outlook.
4.) Open MFCMapi (if Outlook is x64, then use x64 of MFCMapi)
5.) ok > Session > Logon and display store table
6.) Select the profile for the user you added.
7.) Double click “mailbox – user”
8.) Expand “Root Container” > right click on “Recoverable Items” and select > open contents table
9.) Give it a min to enumerate all items
10.) Select any unwanted items and right click “delete message”
11.) You can also expand recoverable items and then highlight purge or deletions and open the contents table for those as well.
12.) Then close windows until you get the original one and logoff.
Be careful with MFCMapi as it can cause serious damage to a mailbox.
Source https://social.technet.microsoft.com/Forums/exchange/en-US/0afd1d0e-7fe1-461f-a6f2-40908554852d/exchange-2010-purge-items-in-recover-deleted-items?forum=exchange2010