Supporting Messaging Clients

Use SSL with Basic Authentication

Secure Sockets Layer (SSL) is an encryption method for sending messages over a secure channel. If a virtual server is configured for Basic Authentication over SSL, users must specify a valid Windows 2000 user account and password to log on. By default, POP3 virtual servers use port 995 for SSL communication. If you are configuring multiple virtual servers, you must change the default SSL port to create a unique combination of IP address, TCP port, and SSL port.

Important   In addition to setting the SSL port number, you must request and install a certificate to enable SSL on a POP3 virtual server. For instructions on installing a certificate, see Installing a Certificate.

To use SSL with Basic authentication:

  1. Start System Manager
    on the Start menu, point to Programs, point to Microsoft Exchange, and then click System Manager.
  2. Navigate to POP3.

    System Manager

    1. Administrative Groups
    2. Administrative group
    3. Servers
    4. Server
    5. Protocols
    6. POP3
  3. In the console tree, right-click a virtual server, and then click Properties.
  4. On the General tab, click Advanced.
  5. On the Advanced tab, select an existing IP Address, and then click Edit.
  6. Type an SSL port number, and then click OK.