In Figure 4 - 7 , notice that a shared mailbox, resource mailbox, or even a linked user mailbox all have a
Recipient type of UserMailbox .
Figure 4-6
Figure 4-7
Chapter 4: Working with User and Group Objects
97
Although all the Recipients have a RecipientType of UserMailbox , only regular mailbox - enabled
users created on Exchange Server 2007 and whose Active Directory Services account is enabled will have
a RecipientTypeDetails property set to $True for the Recipient type UserMailbox .
Figure 4 - 8 has the cmdlet run again to display only Recipients with Recipient type of UserMailbox ,
however we define a filter to further distinguish these Recipients with similar Recipient types. Notice
that the recipienttypedetail property is set to $True only for ExchUser , which is a regular user
mailbox created on Exchange Server 2007.
Figure 4-8
A linked mailbox object is also a UserMailbox object; however, this mailbox type is accessed by a user in
a separate trusted forest. A forest trust must exist before a LinkedMailbox can be created. Organizations
that deploy Exchange in a dedicated resource forest can allow users in one or more user account trusted
forests to access mailboxes on Exchange. Even if a user in a separate forest is used to access the
LinkedMailbox , a disabled Windows user account in the Exchange resource forest must be associated
with the Exchange mailbox.
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