Supporting Messaging Clients

Disable Basic Authentication

If you want to use a method that is more secure or that doesn't prompt the user for a name and password, you can disable Basic Authentication.

Warning   POP3 clients cannot log on to Exchange unless one of the authentication methods it supports is enabled on the server. If you disable Basic Authentication, make sure an alternative method is available on the server and supported by the POP3 client.

To disable 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 Access tab, click Authentication.
  5. Click Basic Authentication to clear the check box, and then click OK.