The r/conspiracy thread where things unfolded: https://www.reddit.com/r/conspiracy/comments/53fw9x/bleachbi... One of several archived copies of the r/exchangeserver thread, "Remove or replace to/from address on archived emails?" (the user stonetear deleted his account during the r/conspiracy thread): http://archive.is/FXcao
Since then it's been spammed in a variety of low traffic subreddits in an effort to make it relevant news.
Personally, I find it had to trust anything that comes out of reddit's political forums, as they are incredibly unreliable sources of information. (this included)
The /r/exchangeserver communities top post of all time as of yesterday had 50 upvotes. The top post from 2 years ago had 25 and 13 comments. But somehow I'm supposed to believe that the best technical resource this guy could think of when faced with this investigation was reddit? Umm... No. I don't believe it for a second.