All management of POP3 user mailboxes is performed within
Active Directory. In previous versions,
Exchange used its own database to hold directory information, and
recipients were managed within Exchange Administrator. In Windows
2000, the directory database the operating system provides is now
capable of holding all messaging directory data. Because a separate
directory for Exchange is no longer necessary, all manipulation of
mailboxes is coordinated within Active Directory Users and
Computers. After installing System Manager on the Windows 2000
computer, a set of extensions is added to the standard Active
Directory console. This allows for the creation of an Exchange
mailbox when a new user account is defined in Active Directory
Users and Computers.
Only users with Windows 2000 accounts can be mailbox-enabled to
send and receive mail. If an account is mail-enabled but not mailbox-enabled, users can only send mail.
Mailbox-enabled users can also receive mail and have additional
settings to configure.