Interesting interview at NextGov over e-mail records here. One excerpt:
Fuchs: What happened when the Bush administration came in is that they scrapped the e-mail archiving system [established under the Clinton administration].... and they didn't replace it. They actually did develop a replacement in consultation with National Archives, but they made the decision not to install it. So, for the eight years of the Bush administration, there is no archive of the e-mails that were sent or received within the White House. . . .