I need help in recovering of three mailboxes. Every night I do a Normal
Backup of our exchange server. Including the option to Backup the Full
database and Logs.

First and foremost is this the correct method in Backing up the exchange
server and all mailboxes? If so I have attempted to Restore the 3 mailboxes
from the Storage media I backed up the night before.

All i get on the log is the message saying "unable to restore the directory.

Job completion status : Failed.

What am i doing wrong?