In Outlook, go to File > Options > Calendar > Free/Busy Options.To see your the free/busy availability information of invitees, configure the free/busy URL Uniform Resource Locator is the address of a web page on the world wide web. If the user is not from a primary domain, the username must include the domain (for example, When Outlook completes the test connection, click Close. Type the user, server, and login information, and click Next.Select or Exchange ActiveSync compatible service, and click Next.Select Manual setup or additional server.Click Add, enter a name for the profile, and confirm.

Go to Windows Control Panel > Mail and click Show Profiles.

To create a profile for Exchange ActiveSync in Outlook: For more information refer to Kerio Connect Client. If the value of InternalClientAuthenticationMethod and the value of ExternalClientAuthenticationMethod is not set to NTLM, this is a finding.To avoid these limitations, you can use Kerio Connect Client instead. Get-OutlookAnywhere | Select Name, Identity, InternalClientAuthenticationMethod, ExternalClientAuthenticationMethod

Open the Exchange Management Shell and enter the following command: Microsoft Exchange 2013 Mailbox Server Security Technical Implementation Guide For this reason, Outlook Anywhere must be deployed only for enclave-sourced Outlook users. There is also a constraint where Microsoft supports that the CA server must participate in the AD domain inside the enclave. Note: There is a technical restriction in Exchange OA that requires a direct SSL connection from Outlook to the CA server. Outlook Anywhere, if authorized for use by the site, must use NTLM authentication when accessing email. Access to email services applications require NTLM authentication. Identification and authentication provide the foundation for access control.

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