Along with the public release of Exchange 2007 Beta 2, we are today releasing an update to ExBPA v2.7 called the "Exchange 2007 Readiness Check". This is a new type of scan that you can run against your existing Exchange deployment. Its purpose is to provide a 'to do' list of changes and decisions that need to be made before Exchange 2007 can be deployed. Armed with this analysis, you can spend the next six months getting ready, so that when you crack open the Exchange 2007 DVD, you can get up and running as quickly as possible.
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