Services Used by a Client Access Server

Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2010-08-20

This topic describes the services used by a computer running Microsoft Exchange Server 2010 that has the Client Access server role installed. Depending on the protocols that are made available on the Client Access server and the Client Access method or methods used to access the Client Access server, some or all the following Exchange services may be required.

Enabling Services

To enable services used by a Client Access server, use the Services snap-in in the Microsoft Management Console (MMC). The following table shows the Exchange services that may be required.

Services that may be required by a Client Access server

Service name	Display name	Comments
W3SVC	World Wide Web Publishing Service	This service is required and must be started.
MSExchangeADTopology	Microsoft Exchange Active Directory Topology Service	This service provides Active Directory topology information to several Exchange Server components. This service doesn't have any dependencies.
POP3Svc	Microsoft Exchange POP3	By default, this service is stopped. For clients to use POP3 to connect to Microsoft Exchange, this service must be started. This service depends on the Microsoft Exchange Active Directory Topology service.
IMAP4Svc	Microsoft Exchange IMAP4	By default, this service is stopped. For clients to use IMAP4 to connect to Microsoft Exchange, this service must be started. This service depends on the Microsoft Exchange Active Directory Topology service.
IISAdmin	Internet Information Services Admin Service	This service manages the Internet Information Services (IIS) metabase and provides support for the World Wide Web Publishing Service (W3SVC) service, the POP3 service, and the IMAP4 service. These services are required by the Client Access server. IIS Admin also supports other applications, such as the metabase update service, which is an internal component of the system attendant.
MSExchangeServiceHost	Microsoft Exchange Service Host	This service configures the /rpc virtual directory in IIS and registry data for Outlook Anywhere. This service depends on the Microsoft Exchange Active Directory Topology service.
MSExchangeFDS	Microsoft Exchange File Distribution Service	This service is used to distribute offline address book and custom Unified Messaging prompts. This service depends on the Microsoft Exchange Active Directory Topology service.