Applies to: Exchange Server 2007 SP3, Exchange Server
2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2009-02-26
During the installation of Microsoft Exchange Server 2007, Setup runs a set of tasks that install new services. A service is a background process that can be launched during operating system startup by the Service Control Manager in Windows Server 2003 and Windows Server 2008. Services are executable files that are designed to operate independently and without administrative intervention. A service can run using either a graphical user interface mode or a console mode.
Services are not new to Microsoft Exchange Server. All previous versions of Exchange Server included components that were implemented as services.
Each server role includes services that are part of or may be needed by the server role to perform its functions. Although Setup will install all services whether they are immediately needed or not, some services will only become active when specific features are used.
The following table lists by name and by short name the various services that are installed by Exchange 2007. Also included is a description of each service, the server role that installs the service, and whether the service is required or optional. In the table, optional means that the service is installed by Setup, but it can be disabled by an administrator if the administrator determines that the function provided by the service is not needed by the administrator's organization.
Services installed by Exchange Setup
| Service name | Service short name | Security context | Description and dependencies | Server role(s) | Required (R) or optional (O) |
|---|---|---|---|---|---|
|
Microsoft Exchange Active Directory Topology |
MSExchangeADTopology |
Local System |
Provides Active Directory topology information to several Exchange Server components. This service does not have any dependencies. |
Mailbox, Client Access, Hub Transport, Unified Messaging |
R |
|
Microsoft Exchange ADAM |
ADAM_MSExchange |
Network Service |
Active Directory Application Mode (ADAM) is used to store configuration data and recipient data on the Edge Transport server. This service represents the named instance of ADAM that is automatically created by Setup during Edge Transport server installation. |
Edge Transport |
R |
|
Microsoft Exchange Credential Service |
EdgeCredentialSvc |
Local System |
Monitors credential changes in ADAM and installs the changes on the Edge Transport server. |
Edge Transport |
R |
|
Microsoft Exchange EdgeSync |
MSExchangeEdgeSync |
Local System |
Connects to ADAM instance on subscribed Edge Transport servers over secure Lightweight Directory Access Protocol (LDAP) channel to synchronize data between a Hub Transport server and an Edge Transport server. This service is dependent upon the Microsoft Exchange Active Directory Topology service. If there are no Edge Subscriptions configured, this service can be disabled. |
Hub Transport |
O |
|
Microsoft Exchange File Distribution Service |
MSExchangeFDS |
Local System |
Used to distribute offline address book and custom Unified Messaging prompts. This service is dependent upon the Microsoft Exchange Active Directory Topology and Workstation services. |
Client Access, Unified Messaging |
R |
|
Microsoft Exchange Anti-spam Update |
MSExchangeAntispamUpdate |
Local System |
Used to automatically download anti-spam filter updates from Microsoft Update. This service does not have any dependencies. |
Hub Transport, Edge Transport |
O |
|
Microsoft Exchange IMAP4 |
MSExchangeIMAP4 |
Local System |
Provides IMAP4 services to IMAP clients. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Client Access |
O |
|
Microsoft Exchange Information Store |
MSExchangeIS |
Local System |
Manages Exchange Server databases. Provides data storage for messaging clients. This service is dependent upon the following services: Event Log, NT LM Security Support Provider, Remote Procedure Call (RPC), Server, and Workstation. |
Mailbox |
R |
|
Microsoft Exchange Mail Submission Service |
MSExchangeMailSubmission |
Local System |
Used to notify a Hub Transport server located in the Mailbox server's Active Directory site that messages are ready for retrieval from a sender's outbox. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Mailbox |
R |
|
Microsoft Exchange Mailbox Assistants |
MSExchangeMailboxAssistants |
Local System |
Provides functionality for Calendar Attendant, Resource Booking Attendant, Out of Office Assistant, and Managed Folder Mailbox Assistant. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Mailbox |
R |
|
Microsoft Exchange Monitoring |
MSExchangeMonitoring |
Local System |
Provides a remote procedure call (RPC) server that can be used to invoke diagnostic cmdlets. This service does not have any dependencies. |
All |
O |
|
Microsoft Exchange POP3 |
MSExchangePOP3 |
Local System |
Provides POP3 services to POP3 clients. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Client Access |
O |
|
Microsoft Exchange Replication Service |
MSExchangeRepl |
Local System |
Provides log shipping functionality for local continuous replication (LCR), cluster continuous replication (CCR), and standby continuous replication (SCR). This service is dependent upon the Microsoft Exchange Active Directory Topology service. This service is required on all Mailbox servers that use LCR, CCR, or SCR. It is not needed on Mailbox servers that do not use continuous replication. On Mailbox servers that do not use continuous replication, this service may be stopped and set to manual startup or disabled. |
Mailbox |
O |
|
Microsoft Exchange Search Indexer |
MSExchangeSearch |
Local System |
Provides content to the Microsoft Search (Exchange Server) service for indexing. This service is dependent upon the Microsoft Exchange Active Directory Topology service and the Microsoft Search (Exchange Server) service. |
Mailbox |
O |
|
Microsoft Exchange Service Host |
MSExchangeServiceHost |
Local System |
Configures the RPC virtual directory in Internet Information Services (IIS), and registry data for ValidPorts, NSPI Interface Protocol Sequences, and AllowAnonymous for Outlook Anywhere. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Mailbox, Client Access |
R |
|
Microsoft Exchange Speech Engine |
MSSpeechService |
Network Service |
Provides speech processing services for Unified Messaging. This service is dependent upon the Windows Management Instrumentation service. |
Unified Messaging |
R |
|
Microsoft Exchange System Attendant |
MSExchangeSA |
Local System |
Provides monitoring, maintenance, and directory lookup services for Exchange Server. This service is dependent upon the following services: Event Log, NT LM Security Support Provider, Remote Procedure Call (RPC), Server, and Workstation. |
Mailbox |
R |
|
Microsoft Exchange Transport |
MSExchangeTransport |
Network Service |
Provides Simple Message Transfer Protocol (SMTP) server and transport stack. This service is dependent upon the Microsoft Exchange Active Directory Topology service. |
Hub Transport, Edge Transport |
R |
|
Microsoft Exchange Transport Log Search |
MSExchangeTransportLogSearch |
Local System |
Provides message tracking and transport log searching. This service has no dependencies. |
Mailbox, Hub Transport, Edge Transport |
O |
|
Microsoft Exchange Unified Messaging |
MSExchangeUM |
Local System |
Provides Unified Messaging features, such as the storing of inbound faxes and voice mail messages in a user's mailbox, and access to that mailbox via Outlook Voice Access. This service is dependent upon the Microsoft Exchange Active Directory Topology service and the Microsoft Exchange Speech Engine service. |
Unified Messaging |
R |
|
Microsoft Search (Exchange Server) |
MSFTESQL-Exchange |
Local System |
Provides full-text indexing of mailbox data content. This is a Microsoft Exchange-customized version of Microsoft Search. This service is dependent upon the Remote Procedure Call (RPC) service. |
Mailbox |
O |