exchange online client connectivity across regions

Configure a DNS record for the CAS Array name pointing to an IP address for a Client Access server.Create the CAS Array object in Active Directory.Therefore to create a CAS array you only need to: The Client Access Server array is simply an object in Active Directory that associates a DNS name with the RPC Client Access Service for a particular AD Site. Best Practices for Exchange Server 2010 CAS Arraysīasic Requirements of a Client Access Server ArrayĪlthough a CAS array is often assumed to be highly available, it is important to realise that it is not the Client Access Server array itself that delivers high availability.High Availability for Exchange 2010 Client Access Server Arrays.Configure the RPCClientAccessServer Attribute on Mailbox Databases.

Configuring the DNS Record for the Client Access Server Array.Basic Requirements of a Client Access Server Array.The RPC Client Access service can be made highly available.The end user experience during Mailbox server failovers and mailbox moves is improved.Connection throttling and other rules can be applied to mailbox connectivity.Connections to mailbox resources are made via a common path.This new RPC Client Access service delivers several benefits to the organization: This service allows Outlook clients to connect via MAPI/RPC to the Client Access server for mailbox access, however they do still connect directly to mailbox servers for public folder access. In Exchange Server 2010 the Client Access server role was expanded to include a new service called the RPC Client Access Service. However a mailbox user still connected directly to the Exchange 2007 Mailbox server for mailbox and public folder access. In Exchange Server 2007 the Client Access server role was introduced to perform a similar role to the Exchange 2003 Front-End server, in that it was responsible for accepting client connections for services such as Outlook Web Access, ActiveSync, Outlook Anywhere, and other web services. An often misunderstood feature of Exchange Server 2010 is the Client Access server array, or CAS array.

Exchange online client connectivity across regions