Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-02-16

By default, IMAP4 is disabled in Microsoft Exchange Server 2007. After you enable IMAP4, Exchange 2007 accepts unsecured IMAP4 client communications on port 143 and over port 993 using Secure Sockets Layer (SSL).

You can perform the following procedures by using the Exchange 2007 computer that has the Client Access server role installed.

Before You Begin

To perform the following procedures on a computer that has the Client Access server role installed, you must log on by using a domain account that has the permissions assigned to the Local Service Account. The account must also be a member of the local Administrators group on that computer.

For more information about permissions, delegating roles, and the rights that are required to administer Exchange Server 2007, see Permission Considerations.

Procedure

To use Microsoft Management Console to start and stop the IMAP4 service

  1. Click Start, point to Programs, point to Administrative Tools, and then click Services.

  2. To start the Microsoft Exchange IMAP4 service, in the results pane, right-click Microsoft Exchange IMAP4, and then click Start.

  3. To stop the Microsoft Exchange IMAP4 service, in the results pane, right-click Microsoft Exchange IMAP4, and then click Stop.

To use net start to start and stop the IMAP4 service

  1. On the Exchange server that has the Client Access server role installed, open a Command Prompt window.

  2. To start the service, at the command prompt, type net start MSExchangeIMAP4, and then press ENTER.

  3. To stop the service, at the command prompt, type net stop MSExchangeIMAP4, and then press ENTER.

  4. Close the Command Prompt window.

To verify that the IMAP4 service is running

  1. On the Exchange server that has the Client Access server role installed, open a Command Prompt window.

  2. At the command prompt, type telnet localhost 143, and then press ENTER. IMAP4 is working correctly if Telnet returns "+OK Microsoft Exchange IMAP4 server ready."

  3. Close Telnet, and then close the Command Prompt window.

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