Configure IMAP4 Access to Exchange 2007 Servers

[This is pre-release documentation and subject to change in future releases. This topic's current status is: Revising Per Edit.]

Applies to: Exchange Server 2010 Topic Last Modified: 2009-05-19

This topic explains how to use the Exchange Management Shell to configure connectivity options for connecting to servers running Microsoft Exchange Server 2007 for IMAP4 access. By using the settings for this cmdlet, you can specify the port to use to connect servers running Microsoft Exchange Server 2010 that have the Client Access server role installed to Exchange 2007 servers. By default, this value should be set to use port 143. This cmdlet also lets you disable access to Exchange 2007 servers. 

After you have configured IMAP4 access to Exchange 2007, you must restart the IMAP4 service. For more information about how to restart the IMAP4 service, see Start and Stop the IMAP4 Service.

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You can configure Exchange 2010 Client Access servers to connect to mailboxes located on Exchange 2007 servers. However, when you do this, you must disable Secure Sockets Layer (SSL) encryption and enable Basic authentication on the Exchange 2007 server. Because the user name and password are sent in clear text when Basic authentication is used without encryption, we recommended that you secure the traffic between the Client Access server and Exchange 2007 server by using Internet Protocol security (IPsec).

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This example configures IMAP4 access to Exchange 2007 servers by using the default port value:

Set-ImapSettings -ProxyTargetPort 143

This example disables IMAP4 access to Exchange 2007 servers:

Set-ImapSettings -ProxyTargetPort 0

For more information about syntax and parameters, see Set-ImapSettings.

After you configure IMAP4 access to Exchange 2007 servers, you may also want to:

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