Didn't read whats happening with speedboink but e-mail spoofing has been going on since the dawn of the internet. Basically the Senders e-mail address is forged to look like someone elses. You could send an email that looks like its from
[email protected] and when the receiver replies to the email it will go to
[email protected]. Of course there is no record of the email being sent on the whitehouse.gov servers because it didnt originate from there.