Migration to V5000G2 from Websense email security 7.3

Hello,

              We are currently in the planning stages of moving to Websense Appliances V5000G2 and have some questions:

In PEM 7.3, users are notified of isolated emails, but can also check for isolated emails by following a web link to PEM. A password is required to login and is supplied by PEM. When moving to the V5000G2, does PEM provide the user password as it did in V7.3?

Currently we do not use Active Directory LDAP for DHD due to having multiple AD forests/domains sitting behind the email filter. Is AD LDAP integration required with the latest Email Security Gateway on the V5000G2 to create user directories? In the current V7.3 not running on an appliance, PEM notification emails are sent to any user in any of the protected domains.  

Thanks,

Mike