8.20. Configuring the IMAP4 Server for User Access
Problem
You want your users to be able to use the Internet Message Access Protocol (IMAP) to receive mail from your Exchange server.
Solution
Using a graphical user interface
Open the Exchange System Manager (Exchange System Manager.msc).
In the left pane, expand the appropriate Administrative Groups container and expand the Servers container.
Expand the target server, expand its Protocols object, and the IMAP4 object.
Right-click Default IMAP4 Virtual Server and select Properties from the drop-down list.
Select the General tab, and choose an IP address to bind the IMAP4 service to, or choose (All Unassigned). If you want to change the default port number used by this IMAP4 server, click the Advanced button and enter those ports. If desired, limit concurrent connections and time-out time in minutes.
Select the Access tab to control access to this IMAP4 virtual server. By default, IMAP4 authentication is sent in clear text. Configure access by clicking the buttons on this tab.
Click Authentication to set the authentication method for this IMAP4 virtual server. If desired, require SSL/TLS encryption to prevent network sniffing of credentials and message content. You can select Basic or SASL authentication. If you choose SASL authentication, you can click Edit to specify different SASL authentication methods. The only SASL authentication method currently supported is NTLM, but, in the future, more might be added and configured here. Click ...