This section demonstrates how to perform mailbox type conversion using Active Roles. The following scenarios are covered:
If a given mailbox from the Exchange forest is assigned to a user from an accounts forest (linked mailbox), then you can use Active Roles to convert that mailbox to the user mailbox type. After you convert the mailbox, the external user (formerly master account) can no longer access the mailbox. The mailbox can only be accessed by the user account that is associated with the mailbox in the Exchange forest (formerly shadow account).
To convert a linked mailbox to a user mailbox
After mailbox conversion, the mailbox user account remains disabled. To enable the user account, set the user password by using the Reset Password command, and then click the Enable Account command.
For a user mailbox in the Exchange forest, you can use Active Roles to assign that mailbox to a user from an accounts forest. This configures the mailbox as follows:
The domain of the user from the accounts forest must be registered with Active Roles (managed domain).
To convert a user mailbox to a linked mailbox
As a result of these steps, the master account is assigned to the mailbox and the mailbox user in the Exchange forest becomes the shadow account, linked with the master account. If the master account is in the scope of the Exchange Resource Forest Management policy, the properties of the master account and shadow account are synchronized in the same way as when you configure a mailbox-enabled user in an accounts forest by using the Exchange Resource Forest Management solution.