Hello, We're introducing Exchange 2007 into our Exchange 2003 Org. We've deployed two consolidated CAS/Hub Transport servers and would like to know the best practice for post configuration for things like: Autodiscover (what DNS records need to be made internally/externally)Load Balancing (we don't have any hardware based so is it NLB or DNS Round Robin) Specifically I need help on the Autodiscover. Does it work straight out of the box or are there post installation steps? Thanks

Dear customer: High availability for the Hub Transport, Edge Transport, Client Access, and Unified Messaging server roles is achieved through a combination of server redundancy, Network Load Balancing (NLB), hardware load balancing, Domain Name System (DNS) round robin, as well as proactive server, service, and infrastructure management. In general, you can achieve high availability for the Client Access, Hub Transport, Edge Transport, and Unified Messaging server roles by using the following strategies and technologies: Client Access You can use NLB or a third-party hardware-based network load-balancing device for Client Access server high availability. Hub Transport You can deploy multiple Hub Transport servers for internal transport high availability. Load balancing of outbound connections to remote domains is achieved by specifying more than one Hub Transport server in the same Active Directory site as a source server for the Send connector. Load balancing does not occur when the source servers for a Send connector are located in different Active Directory sites. For more information about load balancing and fault tolerance, please refer to the following docuemts: Load Balancing and Fault Tolerance for Transport Servers http://technet.microsoft.com/en-us/library/bb267003(EXCHG.80).aspx Microsoft Exchange Server 2007 includes a new Microsoft Exchange service named the Autodiscover service. The Autodiscover service configures client computers that are running Microsoft Office Outlook 2007. The Autodiscover service can also configure supported mobile devices. The Autodiscover service provides access to Microsoft Exchange features for Outlook 2007 clients that are connected to your Microsoft Exchange messaging environment. The Autodiscover service must be deployed and configured correctly for Outlook 2007 clients to automatically connect to Microsoft Exchange features, such as the offline address book, the Availability service, and Unified Messaging (UM). Additionally, these Exchange features must be configured correctly to provide their respective functionality for Outlook 2007 clients. For more information about Autodiscover Service, please refer to the following documents: How to Configure Exchange Services for the Autodiscover Service http://technet.microsoft.com/en-us/library/bb201695(EXCHG.80).aspx Deployment Considerations for the Autodiscover Service http://technet.microsoft.com/en-us/library/aa997633.aspx White Paper: Exchange 2007 Autodiscover Service http://technet.microsoft.com/en-us/library/bb332063(EXCHG.80).aspx Hope it helps. If anything is unclear, please feel free to let me know. Rock Wang - MSFT