Exchange Server Cookbook

8.19. Configuring the POP3 Server for User Access

Problem

You need to configure your Exchange server to allow users to connect with POP3 clients.

Solution

Using a graphical user interface

1. Open the Exchange System Manager (Exchange System Manager.msc).

2. In the left pane, expand the appropriate Administrative Groups container and expand the Servers container.

3. Expand the target server, expand its Protocols object, and the POP3 object.

4. Right-click Default POP3 Virtual Server and select Properties from the drop-down list.

5. Select the General tab and choose an IP address to bind the POP3 service to, or choose (All Unassigned). If you want to change the default port number used by this POP3 server, click the Advanced button and enter those ports. If desired, limit concurrent connections and time-out time in minutes.

6. Select the Access tab to control access to this POP3 virtual server. By default, POP3 authentication is sent in clear text. Configure access by clicking the buttons on this tab.

   • Click Authentication to set the authentication method for this POP3 virtual server as shown in Figure 8-3. If desired, require SSL/TLS (Secure Sockets Layer/Transport Level Security) encryption to prevent network sniffing of credentials and message content. You can select Basic or Simple Authentication and Security Layer (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, ...