Abstract: An email configuration system may use a topology database to determine if a change request results in a valid configuration. The topology database may contain a definition of an enterprise email system, including forests, servers, and individual mailboxes. If a valid configuration is found, a change request may be scheduled and implemented. The email configuration system may store the change request so that a change may be undone at a later time. Changes may be implemented to the enterprise mail system by changing the topology definition and running an analysis of the current topology and a desired topology.