Use this option is to delete message tracking-related data from the database. Select the servers for which data must be deleted, the date range, and the type of import to clear.
             
        
| Option | Description | 
|---|---|
|   | Click this button to view all message tracking files whose events have been imported so far. For more information about this option, see Tracking file import history. | 
| Purge from | Enter the start date of the date range to purge. | 
| Purge to | Enter the end date of the date range to purge. | 
| Purge all events | Select this check box to purge all message tracking-related records within the selected date range. | 
| Purge some events | Click the link to select specific events to purge within the selected date range, for example connector imports, or directory synchronization. For more information about event types, see Data source: Message tracking. | 
| Remove orphaned items (slow) | Select this check box to purge orphaned items, such as recipients or MessageIDs. Warning: This operation may take several hours to complete. | 
| Compact database | Select this check box to compact or shrink the database at the end of the import process. |