HTTP/1.1 503 Service Unavailable Content-Type: text/html; charset=UTF-8 Content-Length: 931 Connection: close P3P: CP="CAO PSA OUR" Expires: Thu, 01 Jan 1970 00:00:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Application Blocked
(This is the contents of a .midi file downloaded from trillian.mit.edu. The file on trillian is a valid MIDI file, but something replaces it with the following message:

Application Blocked

Access to the application you were trying to use has been blocked in accordance with company policy. Please contact your system administrator if you believe this is in error.

User: 207.172.223.184

Application: http-audio