Posted 10 May 2011 - 09:21 AM
My thiught would be that in house email would serve you better. Internet mail histing is great but with the seven year retention requirement it would probably not be cost effective in the long term. Also you lose that intergration with AD that is helpful in a domain environment. Keep in mind there are other email solutions besides exchange that might be worth looking into.
Get your facts first, then you can distort them as you please.