Security groups and accounts Exchange creates

Alongside the schema changes made to support server functionality, the Exchange installation procedure adds a number of security groups and mail-enabled accounts to Active Directory that Exchange uses for different purposes. Table 2-3 lists the security groups Exchange creates in Active Directory and their purpose. Most are universal security groups (USGs), which are created in a new organizational unit (OU) called Microsoft Exchange Security Groups in the root domain of the forest. As indicated in Table 2-3, many are used to hold the security principals required to enable users to perform the tasks assigned to role groups defined in the Exchange role-based access control mechanism, though you shouldn’t ...

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