White House Pulls Informant Email

In sending an email this morning to the address, I promptly received this notice:

This is an automatically generated Delivery Status 
Notification

Delivery to the following recipient failed permanently:

    flag@whitehouse.gov

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by 
the recipient domain. We recommend contacting the other 
email provider for further information about the cause of 
this error. The error that the other server returned was: 
550 550 5.2.1 <flag@whitehouse.gov>... The email address you 
just sent a message to is no longer in service.