Use the following task to enable a user to change the voice mailbox password at next logon.
You can also change the user properties from the User Management Web page. However, this page does not have filters that assist you in locating a specific user.
By selecting this check box, the user is forced to change the voice mailbox password at next logon. By default, Messaging requires that new users change their temporary passwords when the users log in to their mailbox for the first time.