The security gateway refused to process and retrieve the URL you requested because of a protocol violation:
The security gateway saw the request/response:
This kind of protocol violation is denied in order to protect Web clients/servers from attacks that include control and other non-printable characters. It is also denied to ensure that only HTTP traffic is passed by the HTTP proxy, thus ensuring the integrity of your site's security policy.
If you believe that this request should have been allowed, contact the Web site administrator and request that their application be modified to be HTTP compliant.