How to recover an Exchange mailbox:
First place a backup of your database to a different location, on your mail server.
attach the database to exchange :
New-MailboxDatabase -Recovery -Name RecoveryDB -Server Exchange01 -EdbFilePath “D:restoreOLDDB-name.edb” -LogFolderPath “D:\restore”
Disable indexing on the mailbox to avoid performance issue’s :
Set-MailboxDatabase “RecoveryDB” -indexenabled:$false
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