I tried the link, and it sent me an executable file, as expected. I edited the post so the link isn't clickable anymore...
code:
67.15.157.175
HTTP/1.1 200 OK
Date: Sun, 18 Mar 2007 20:48:10 GMT
Server: Apache/1.3.37 (Unix) ...
Content-Disposition: attachment; filename="test@example.com"
X-Powered-By: PHP/4.4.3
Content-Length: 76288
Connection: close
Content-Type: application/octet-stream