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#Exchange online client requirements Offline#

Client Access Rule componentsĪ rule is made of conditions, exceptions, an action, and a priority value.Ĭonditions: Identify the client connections to apply the action to. Block access to the classic Exchange admin center (EAC) for users in a specific country or region.įor Client Access Rule procedures, see Procedures for Client Access Rules in Exchange Online.īlock service account access when using EWS impersonation is not supported with Client Access Rules.Prevent client access using Exchange Online PowerShell.Prevent client access using federated authentication.

#Exchange online client requirements Offline#

Block access to an offline address book (OAB) for specific users based on their usernames.

Block access to Exchange Web Services (EWS) for users in specific departments, cities, or countries.

Allow access to Exchange ActiveSync clients from specific IP addresses, and block all other ActiveSync clients.

You can prevent clients from connecting to Exchange Online based on their IP address (IPv4 and IPv6), authentication type, and user property values, and the protocol, application, service, or resource that they're using to connect. Client Access Rules are like mail flow rules (also known as transport rules) for client connections to your Exchange Online organization. Summary: Learn how administrators can use Client Access Rules to allow or block different types of client connections to Exchange Online.Ĭlient Access Rules help you control access to your Exchange Online organization based on client properties or client access requests.