E-mails to flag@whitehouse.gov Bounce Back?

The email address set up for people to snitch out what they consider to be "fishy" opponents of Obamacare, is reported to now have the emails mailed to it, bounce back to sender, according to a Drudge headline.

OBAMA PULLS PLUG ON FLAG@WHITEHOUSE.GOV... EMAILS BOUNCE BACK

Following the discussions about this, I ran across Hot Air and Just One Minute, both of which tested it, and sure enough, their emails bounced.

From Hot Air:

Tom Maguire ran a test, as did I earlier this morning. This is what I got in return:

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

flag@whitehouse.gov
SMTP error from remote mail server after RCPT TO::
host mailhub-wh2.whitehouse.gov [63.161.169.140]:
550 5.2.1 ... The email address you just sent a message to is no longer in service.

Just One Minute's email did not bounce back yet.

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