Providing High Availability for combined CAS, Hub & DAG servers…

One of the great changes in Exchange 2010 over Exchange 2007 is the ability to combine both CAS & Hub roles on mailbox servers configured as DAG, this gives you the flexibility to have a highly available solution with just 2 servers. Note that you can still combine the UM role on the same servers…

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Exchange 2010: Proxy or Redirect?

In Exchange 2007 we introduced the concept of proxying and redirection to manage the multi sites deployments (Internet facing & Non-Internet facing). In transitioning to Exchange 2010 CAS it’s a must now to use a new legacy Exchange environment with a new URL for OWA & EAS “mostly we use legacy.contoso.com” and which Exchange 2010…

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