3.1.5 Message Processing Events and Sequencing Rules
The results of an Autodiscover request fall into the following categories.
The URI is not functional. The client SHOULD process this response as specified in section 3.1.5.1.
The HTTP POST command returns an HTTP 302 Redirection response. The client SHOULD process this response as specified in section 3.1.5.2.
The Autodiscover server returns an Action element (section 2.2.4.1.1.2.2) with a value of "redirectAddr" or "redirectUrl". The client SHOULD process this response as specified in section 3.1.5.3.
The Autodiscover server returns configuration information. The client SHOULD process this response as specified in section 3.1.5.4.
The Autodiscover server returns error information. The client SHOULD process this response as specified in section 3.1.5.5.