Client access rules are like mail flow rules (also known as transport rules) for client connections to your organization. You use conditions and exceptions to identify the connections based on their properties, and actions that allow or block the connections. Note: Currently, not all authentication types are supported for all protocols. The supported authentication types per protocol are described in this list:  ExchangeActiveSync: BasicAuthentication, OAuthAuthentication, and CertificateBasedAuthentication. ExchangeAdminCenter: BasicAuthentication and AdfsAuthentication. IMAP4: BasicAuthentication and OAuthAuthentication. OutlookWebApp: BasicAuthentication and AdfsAuthentication. POP3: BasicAuthentication and OAuthAuthentication. RemotePowerShell: BasicAuthentication and NonBasicAuthentication.  You need to be assigned permissions before you can run this cmdlet. Although this topic lists all parameters for the cmdlet, you may not have access to some parameters if they're not included in the permissions assigned…