It is a repository for application - related information,
which it replicates with the Active Directory. ADAM provides an LDAP service and an Extensible
Storage Engine (ESE) database for accessing and storing configuration, Recipient, and topology
information required by the Edge Transport server role.
The ADAM database is an ESE database called adamntds.dit stored in the \Exchange Server\
TransportRoles\data\Adam directory.
You are required to install ADAM prior to installing the Edge Transport server role. When the Edge
Transport server role is installed, an ADAM instance called MSexchangeAdam is started. When the
service starts it opens ports for LDAP and Secure LDAP connections. These ports are set to 50389
and 50636, respectively. The ADAM service implemented by the Edge Transport server role
is ADAM_MSExchange , its process name is Dsamain , and it has the service dependencies shown
in Figure 9 - 1 .
Figure 9-1
Chapter 9: Confi guring the Edge Transport Server Role
239
Edge Subscription and Synchronization
As noted earlier, the Edge Transport server resides in a perimeter network and uses the ADAM directory
service. However, to function optimally, this directory must be updated with certain information from
Active Directory within the Exchange organization. Hence, edge subscriptions are used to securely
populate a subset of data from Active Directory into ADAM.
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