3.11.5.2 Client Behavior

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The following section specifies protocol client behavior based on the ms-user-logon-data header field.

If this header field is present in the reply to a REGISTER request and has a value of "RemoteUser", the protocol client SHOULD treat the requester as an external protocol client connecting from outside of the enterprise network. Under this condition, the protocol client SHOULD do the following:

  • Use a Web service Uniform Resource Locator (URL) that is accessible from the public Internet for distribution list expansion, address book download, and calendar services.

  • Assume that it does not have direct media connectivity to the enterprise network.