To reset a mailbox password:
Click the Mailbox Admin heading.
The Mailbox List page appears.
Click the Reset Password link for the mailbox you want to reset the password for.
A message appears that asks you to confirm your request to change the password.
Click the OK button.
Reset a password only if the mailbox owner forgets it or is “locked-out”. The password for the reset mailbox is 0000. Mailbox owners cannot access their messages until they change the default password. After you reset a mailbox password, tell the mailbox owner to change the default password as soon as possible. While the mailbox has the default password, the mailbox is vulnerable to unauthorized access.