DotnetopenAuth throws a "ProtocolException

I am trying to implement OpeinID login using ASP.NET MVC. I am trying to follow the steps indicated in http://blog.nerdbank.net/2008/04/add-openid-login-support-to-your-aspnet.html

Below are my web.config settings

<dotNetOpenAuth>
<messaging>
    <untrustedWebRequest>
        <whitelistHosts>
            <add name="localhost" />
        </whitelistHosts>
    </untrustedWebRequest>
</messaging>
<reporting enabled="false" />

<system.net>
<defaultProxy useDefaultCredentials="true">
    <proxy autoDetect="True" usesystemdefault="True"/>
</defaultProxy>

I get a "ProtocolException" message saying "No openId endpoint" when I try to create a request.

try 
{
    //ProtocolException is thrown
    IAuthenticationRequest request = openID.CreateRequest(openid_identifier); 
    request.RedirectToProvider();
}
catch (ProtocolException )
{
    throw;
}

Log file created by Dotnetopenauth. (I replaced my valid user id <myopenid>)

    {INFO}06/07 17:24:45 - Performing discovery on user-supplied identifier: http://<myopenid>.myopenid.com/
{DEBUG}06/07 17:24:45 - Filtering and sorting of endpoints did not affect the list.
{INFO}06/07 17:30:03 - DotNetOpenAuth, Version=3.4.7.11121, Culture=neutral, PublicKeyToken=2780ccd10d57b246 (official)
{INFO}06/07 17:30:03 - Scanning incoming request for messages: http://localhost/OpenID/User/Authenticate
{DEBUG}06/07 17:30:03 - Incoming HTTP request: POST http://localhost/OpenID/User/Authenticate
{DEBUG}06/07 17:30:31 - .NET Uri class path compression overridden.
{DEBUG}06/07 17:30:31 - HTTP GET http://<myopenid>.myopenid.com/
{ERROR}06/07 17:30:55 - WebException ConnectFailure from http://<myopenid>.myopenid.com/, no response available.
{ERROR}06/07 17:30:55 - Error while performing discovery on: "http://<myopenid>.myopenid.com/": DotNetOpenAuth.Messaging.ProtocolException: Error occurred while sending a direct message or getting the response. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 50.16.193.31:80
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.GetResponse()
   at DotNetOpenAuth.Messaging.StandardWebRequestHandler.GetResponse(HttpWebRequest request, DirectWebRequestOptions options)
   --- End of inner exception stack trace ---
   at DotNetOpenAuth.Messaging.StandardWebRequestHandler.GetResponse(HttpWebRequest request, DirectWebRequestOptions options)
   at DotNetOpenAuth.Messaging.UntrustedWebRequestHandler.GetResponse(HttpWebRequest request, DirectWebRequestOptions options)
   at DotNetOpenAuth.Yadis.Yadis.Request(IDirectWebRequestHandler requestHandler, Uri uri, Boolean requireSsl, String[] acceptTypes)
   at DotNetOpenAuth.Yadis.Yadis.Discover(IDirectWebRequestHandler requestHandler, UriIdentifier uri, Boolean requireSsl)
   at DotNetOpenAuth.OpenId.UriDiscoveryService.Discover(Identifier identifier, IDirectWebRequestHandler requestHandler, Boolean& abortDiscoveryChain)
   at DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.Discover(Identifier identifier)
   at DotNetOpenAuth.OpenId.RelyingParty.AuthenticationRequest.Create(Identifier userSuppliedIdentifier, OpenIdRelyingParty relyingParty, Realm realm, Uri returnToUrl, Boolean createNewAssociationsAsNeeded)

Then I checked with a violinist, and I do not see the generated request get the URI. It seems that dotnetopenauth cannot generate the request and does not work there.

Can someone please help me here? Anything I'm missing?

I work because of the proxy.