Wednesday, March 12, 2014

Client Connectivity in an Exchange 2013 Coexistence Environment

This is post is reference to the latest EHLO Blog post on Client Connectivity in an Exchange 2013 Coexistence Environment written by our Ross Smith IV [MSFT]. Major Changes made to the way how Client connects from Exchange 2007 to 2010 and then to 2013 and its good to know what changed and how they all behave when they present in the same Environment and design the solution accordingly and either have a Co-existence setting for a long term or have it deployed properly till the migration completes.

To begin with this you need to have some fundamental knowledge on the client connectivity changes between different version of Exchange  and how Autodiscover is utilized and how CAS to CAS proxying and Re-direction methodology works and what behavioral changes you will expect when you have different flavors of Exchange present within your Exchange Organization at different AD sites and User Experience when they connect from various sites using various resources and most important how the DR will occur if you have one created for your Environment.

 Ross clearly explains the changes between an Exchange 2007 and 2010 Co-existence environment and how things will occur when you place a Exchange 2013 server which adds little bit more complexity and provides you all the required resources to refer and pain points to consider with various real-time scenarios that you can refer and design your solution and most importantly things are changing at rapid rate today and these vital knowledge on Client connectivity is a must known for all Administrators who manage the Exchange Environment, I would request you to review this post from top to bottom and also read related resources available and referenced to get yourself ready to face any complex deployment scenario, end of the day "User Experience Matters"

Read the Blog post here : Client Connectivity in an Exchange 2013 Coexistence Environment 

In Addition to this Read one of Ross's Old EHLO blog post on RPC Client Access Cross-Site Connectivity Changes to get some Insight on how client connectivity was working prior Exchange 2010 SP2 RU3 in Cross site scenario which will cover some additional  aspects on the topic.

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