Services That Are Used by Exchange
Services are application types that run in the system background. Services provide core operating system features, such as Web serving, event logging, file serving, help and support, printing, cryptography, and error reporting. To provide core system features to its users, Microsoft® Exchange Server 2003 provides a number of services (see Table B.1) that run on an Exchange server.
Note
To manage services on local or remote computers, use the Microsoft Management Console (MMC) Services snap-in.
Services snap-in
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Exchange services
| Service display name/abbreviation | Default startup type | Description and dependencies |
|---|---|---|
Microsoft Exchange Calendar Connector (MSExchangeCalCon) |
Manual |
Allows sharing of Lotus Notes and Novell GroupWise Free/Busy Information. Dependencies: Event Log, Microsoft Exchange Information Store, Microsoft Exchange Connectivity Controller |
Microsoft Exchange Connectivity Controller (MSExchangeCoCo) |
Manual |
Provides support services for Microsoft Exchange connectors. Dependencies: Event Log |
Microsoft Exchange Connector for Lotus Notes (LME-NOTES) |
Manual |
Allows sharing of mail traffic with Lotus Notes systems. Dependencies: Event Log, Microsoft Exchange Connectivity Controller |
Microsoft Exchange Connector for Novell GroupWise (LME-GWISE) |
Manual |
Allows sharing of mail traffic with Novell GroupWise systems. Dependencies: Event Log, Microsoft Exchange Connectivity Controller, Microsoft Exchange Router for Novell GroupWise |
Microsoft Exchange Event (MSExchangeES) |
Manual |
Monitors folders and triggers events for server applications compatible with Exchange Server 5.5. Dependencies: Microsoft Exchange Information Store |
Microsoft Exchange IMAP4 (IMAP4Svc) |
Disabled |
Provides Internet Message Access Protocol version 4 (IMAP4) services to clients. If this service is stopped, clients cannot connect to this computer using IMAP4. Dependencies: IIS Admin Service |
Microsoft Exchange Information Store (MSExchangeIS) |
Automatic |
Manages the Exchange store. The service makes mailbox stores and public folder stores available. If this service is stopped, mailbox stores and public folder stores on this computer are unavailable. If this service is disabled, any services that explicitly depend on it cannot start. Dependencies: Microsoft Exchange System Attendant |
Microsoft Exchange Management (MSExchangeMGMT) |
Automatic |
Provides Exchange management information using Windows Management Instrumentation (WMI). If this service is stopped, WMI providers implemented to work in Microsoft Exchange Management, like message tracking and Directory Access, will not work. Dependencies: Remote procedure call (RPC), WMI |
Microsoft Exchange MTA Stacks (MSExchangeMTA) |
Automatic |
Provides Exchange X.400 services. You use Exchange X.400 services to connect to Exchange 5.5 servers and other connectors (custom gateways). If this service is stopped, Exchange X.400 services are unavailable. Dependencies: Microsoft Exchange System Attendant |
Microsoft Exchange POP3 (POP3Svc) |
Disabled |
Provides Post Office Protocol version 3 (POP3) services to clients. If this service is stopped, clients cannot connect to this computer using POP3. Dependencies: IIS Admin Service |
Microsoft Exchange Router for Novell GroupWise (MSExchangeGWRtr) |
Manual |
Provides support for scheduling collaboration with Novell GroupWise systems. Dependencies: None |
Microsoft Exchange Routing Engine (RESvc) |
Automatic |
Provides topology and routing information to servers running Exchange 2003. If this service is stopped, optimal routing of messages will not be available. Dependencies: IIS Admin Service |
Microsoft Exchange Site Replication Service (MSExchangeSRS) |
Disabled |
Provides directory interoperability between Exchange 5.5 and Exchange 2000 Server or Exchange 2003. Site Replication Service (SRS) acts as a directory replication bridgehead server for an Exchange site. SRS runs on Exchange 2000 and serves as a modified Exchange 5.5 directory. SRS uses Lightweight Directory Access Protocol (LDAP) to communicate to both the Active Directory® directory service and the Exchange 5.5 directory. To Exchange 5.5, SRS looks similar to another Exchange 5.5 configuration/recipients replication partner. Note Enabled by default on computers that have Active Directory Connector (ADC). Dependencies: Microsoft Exchange System Attendant |
Microsoft Exchange System Attendant (MSExchangeSA) |
Automatic |
Provides monitoring, maintenance, and Active Directory lookup services (for example, monitoring of services and connectors, proxy generation, Active Directory to metabase replication, publication of free/busy information, offline address book generation, mailbox maintenance, and forwarding Active Directory lookups to a global catalog server). If this service is stopped, monitoring, maintenance, and lookup services are unavailable. If this service is disabled, any services that explicitly depend on it cannot start. Dependencies: Event Log, NTLM Security Support Provider, Remote Procedure Call (RPC), Server, Workstation |
Note
The following Exchange services are set to manual, if installed on a cluster: IMAP4Svc, MSExchangeMTA, MSExchangeSA, MSExchangeIS, SMTPsvc, NNTPsvc, REsvc, MSExchangeMGMT.
You must enable the following Microsoft Windows® services before you run Exchange Setup:
World Wide Web service
Simple Mail Transfer Protocol (SMTP) service
Network News Transfer Protocol (NNTP) service