I just don't believe that Hillary Clinton could not get an email account on a government email server and that somehow having exchange at her house with no controls was the last option she had. I can't think of a scenario where a server at her house is better than almost any other option.
To extrapolate, the assertion is that she could get the secure .gov email account but it would only have been accessible from secured computers. They wouldn't give her a mobile device to access it, so she improvised.
What she could not get was a Blackberry. So rather than use the approved device, she decided the simpler solution was to host her own email and just use a off the shelf device? Nothing about this makes any sense.
