Topic Last Modified: 2012-09-18

On the Receiving Client Access servers page, select one or more servers in your on-premises organization that have the Client Access server role installed. The selection of multi-role servers is also supported. A multi-role server is a server that has both the Mailbox and Client Access server roles installed.

The on-premises Client Access servers you select here will be configured with Receive connectors by the Hybrid Configuration wizard to accept secure mail from the Microsoft Exchange Online Protection service in your Microsoft Office 365 tenant.

For more information

Transport Options in Exchange 2013 Hybrid Deployments