Using Site Server Authentication Service

Complete the following steps to authenticate users with Site Server Authentication Service.

To authenticate users with Site Server Authentication Service

Use the Site Server Membership Directory Manager snap-in to add chat users to the Site Server authentication database. Add individual users to the ou=Members container and groups to the ou=NTGroups container.
From the Chat Service Manager Console menu, select Add/Remove Snap-in.
Select the Extensions property sheet, and then select Microsoft Exchange Chat Service from the Snap-ins that can be extended box.
From the Available extensions box, verify that Personalization and Membership is selected, and then choose OK.
From the Chat Service Manager utility, select a chat server under Microsoft Exchange Chat Service in the left pane.
From the Action menu, choose Properties.

Tip If you want the chat server to accept connections only from authenticated users, select the General property sheet, set the Maximum anonymous connections option to 0, and then choose OK.
Select the Settings property sheet, and then configure the authentication method you want to use.

To use Basic Authentication, select Disable NTLM authentication, and then choose OK.

To use DPA or any third-party SSPI authentication package, select Disable clear-text authentication, type the name of the package in the Authentication methods box, and then choose OK. If you enter the names of two or more packages, separate each name with a space. Chat Service will try to authenticate a user with each package in the order they are listed.
Select the chat server, choose Task from the Action menu, and then choose Membership Server Mapping.
Select the server that contains the authentication database, and then choose OK.