O’Reilly has made early access versions of Exchange 2013 Inside Out: Mailbox and High Availability and Exchange 2013 Inside Out: Clients, Connectivity and UM available for $39.99 each. The deal lasts until July 3. Early access editions allow you to get electronic access to the raw and unedited (well, edited but not completely edited) text as chapters go through the production process.
Paul and I are still updating the books to reflect new developments in the Exchange world and to add new information as we learn more about the ins and outs of the product. That process will have to stop very soon if we are to make the desired publication date in October.
Have fun with the early editions!
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Any Enterprise that has Exchange 2013 On-Premises should have these 2 books 🙂