Exchange 2007-and-2010 Microsoft Exchange Autodiscover Service Configuration Is Not Secure
Saaz IntelliScript has observed that the Microsoft Exchange Autodiscover service was unable to process anonymous requests from an Autodiscover client, for example, an Outlook client. An invalid Autodiscover site configuration and an anonymous client request could cause this error. ‘HostName’ in the error message text refers to the Domain Name System (DNS) name of the remote client.
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Last modified April 17, 2020