Server Configuration > Client Access > POP3 and IMAP4 Connections Tab

  • Article

 

Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2

Use the Connections tab to configure the time-out settings, connection limit settings, and the proxy target port for POP3 and IMAP4.

Note

After you have configured connection settings for the POP3 or IMAP4 service by using the Exchange Management Console, you must restart either the POP3 or IMAP4 service, depending on which service you are using. For more information about how to restart the IMAP4 service, see How to Start and Stop the IMAP4 Service. For more information about how to restart the POP3 service, see How to Start and Stop the POP3 Service.

  • Time-out Settings

    • Authenticated time-out (seconds)   Use this text box to specify the amount of time to wait before closing idle authenticated connections. The default setting is 1800 seconds and the valid input range is 30 to 86400 seconds.

    • Unauthenticated time-out (seconds)   Use this text box to specify the amount of time to wait before closing idle unauthenticated connections. The default setting is 60 seconds and the valid input range is 10 to 3600 seconds.

  • Connection Limits

    • Maximum connections   Use this text box to specify the total number of connections the Client Access server will accept. This includes authenticated and unauthenticated connections. The default value is 2000 and the valid input range is 1 to 25000.

    • Maximum connections from a single IP address   Use this text box to specify the number of connections that the Client Access server will accept from a single IP address. The default value is 20 and the valid input range is 1 to 1000.

    • Maximum connections from a single user   Use this text box to specify the maximum number of connections that the Client Access server will accept from a particular user. The default value is 10 and the valid input range is 1 to 1000.

    • Maximum command size   Use this text box to specify the maximum size of a single command. The default value is 40 bytes and the valid input range is 40 to 1024.

  • Command Relay

    • Proxy target port   Use this text box to specify the port on the Microsoft Exchange Server 2003 back-end server for which POP3 and IMAP4 will relay commands. The default port is 110 for POP3 and 143 for IMAP4. The valid input range is 0 to 65535. Using a value of 0 will disable proxying commands to the Exchange 2003 back-end server.

For More Information

For more information about POP3 and IMAP4, see the following topics: