I am wanting to know if I can open bkf files outside of ntbackup. Everytime I try to restore from backup it says "The backup file contains unrecognized data and cannot be used" My current setup is ...

I have an Exchange 2007 SP2 box. I have Exchange doing IS backups to bkf files, then having Backup Exec backup these files. A user has lost their inbox information and has requested to restore this.