If you have stored all mailboxes data in exchange backup database but suddenly an Exchange BKF file has been damaged and invalid then use exchange backup repair tool which restore exchange 2003 backup data.
Extract exchange backup file through an exchange BKF recovery tool which is an extremely powerful solution to extract exchange backup file. It can extract corrupted EDB, STM and LOG files and gives you throughout the recovery.
Softaken Exchange Backup & Restore for backup of Exchange data and to restore mailboxes without interrupting services of Exchange Server. The software saves Exchange mailbox backup to PST, MSG, EML, and other formats.
Backup Recovery of Exchange server is required when it get damaged due to uncertain errors. The recovery software is executable with all most all exchange versions.
Recover your whole corrupted database without losing a bit of information or disturbing the file original structure by an excellent utility available in market by the name of Exchange BKF Recovery.