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Simple Mail Transfer Protocol (SMTP) (System Services for the Windows Server 2003 Family and Windows XP Operating Systems)

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Service Name: SMTPSVC

Executable Name: Inetinfo.exe

Log On As: LocalSystem

Description: The Simple Mail Transfer Protocol (SMTP) service transports e-mail across the network. It is used as an e-mail submission and relay agent. It can accept and queue email for remote destinations and retry at specified intervals. Windows domain controllers use the SMTP service for intersite e-mail–based replication. The Collaboration Data Objects (CDO) for Windows Server 2003 COM component can use the SMTP service to submit and queue outbound e-mail.

Other applications — for example, Microsoft Exchange Server — might use the SMTP service as the basis for their SMTP support.

In Windows 2000, the SMTP service was installed by default. In Windows Server 2003, this service is now an optional component installed through Add/Remove Windows Components.

If this service is stopped or disabled, e-mail–based replication and forwarding do not function.

Available on: Windows Server 2003, Standard Edition; Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition and Windows Server 2003, Web Edition.

Installed through: Add/Remove Windows Components

Startup type: Automatic

Service status: Started

This service depends on the following system components:

Event Log

IIS Admin Service

Remote Procedure Call (RPC)

Security Accounts Manager

The following system components depend on this service:

None

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