Enable or Disable Circular Logging in Exchange 2010
Via EMC
1.Under Organization Configuration click on Mailbox;
2.Click on Database Management where you find Databases;
3.Take properties by right click and under meiantenance tab apply check of Enable circular logging.
Via PowerShell
Set-MailboxDatabase -CircularloggingEnabled:$true
Remember to re-disable it when done.
Set-MailboxDatabase -CircularloggingEnabled:$false