Anyone even essentially familiar with email systems and technologies are coming out of the wordwork as an expert calling BS on the executive branch's lie. We've seen that lie before with the Bush administration and, if I recall, fewer people had as much to say other than "if their systems suck that bad, something should be done about it." In any case, not making a claim that either side is any different in that regard, but I am saying it's not the first time that lie was attempted.
But I see another similarity in another government lie. The 9-11 report says a lot of things about how/why the buildings fell as they did. And just like people in IT, people in architecture and engineering are still calling BS on the official story. Having worked for an AE firm, I can tell you there was no controversy on the topic. They all knew it was BS.