>>>Update to previous post:
>>>
>>>I've been keeping part of an eyeball on potential Exchange replacements for some time. The sense I get is that nothing matches the capabilities of Outlook+Exchange, it's one of MS's crown jewels in the enterprise space.
>>>
>>True. Some people over here think it is the last real jewel of large worth (Studio and SQL server not forcing people like Outlook does).
>>But MS gives the data before encrytion to NSA - here I believe Snowden more than prepared statements from MS.
>
>Yes, and that's a huge concern for migrating to the cloud. Financially it makes more and more sense to go there for messaging, but at what security cost?
>
>The foot is even known to be in the door with Blackberry: http://www.theregister.co.uk/2013/07/11/blackberry_gives_indian_spooks_access/
>
>More reasons to consider on-premise solutions...

step further: disconnected [physical/sub] net and backup where it belongs today: on USB3 in physical vault[s]