Push Notfication on Server 2008 is not working

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C#

SOAP

iOS

Hi All,
i am able to send push notification from my local-host but i am not able to send push notification from my demo server to iphone device.
my demo server is windows server 2008.
here is my code:

 using (TcpClient client = new TcpClient())
            {
              
string appleurl="gateway.push.apple.com";
string pushpath = @"D:\App_Data\AppPush.p12";
  client.Connect(appleurl, 2195);
 X509Certificate clientCertificate = new X509Certificate(pushpath);
                    X509CertificateCollection clientCertificateCollection = new X509CertificateCollection(new X509Certificate[1] { clientCertificate });

                    SslStream sslStream = new SslStream(client.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);

                    try
                    {
                        sslStream.AuthenticateAsClient(appleurl, clientCertificateCollection, SslProtocols.Default, false);
                    }
}

and is there any setting is required to register our certificate in IIS or MMC.
please let me know.