The caller was not authenticated by the service - wcf

Question

I have build a simple WCF service using wsDualHttpBinding. It is working fine at local end but it throws a error when I publish the service on a different server and try to consume that service in a WPF project.
Error:
System.ServiceModel.SecurityNegotiationException "The caller was not authenticated by the service."
InnerException:
System.ServiceModel.FaultException "The caller was not authenticated by the service."
Server Config:
<system.serviceModel>
<services>
<service name="VetChat.Service.VetChatService" behaviorConfiguration="wsDualHttpBinding.SampleServiceBehavior">
<!-- Service Endpoints -->
<host>
<baseAddresses>
<add baseAddress="http://service.softprodigy.com:8090/VetChatService.svc"/>
</baseAddresses>
</host>
<endpoint address="" binding="wsDualHttpBinding" contract="VetChat.Service.IVetChatService">
<!--
Upon deployment, the following identity element should be removed or replaced to reflect the
identity under which the deployed service runs. If removed, WCF will infer an appropriate identity
automatically.
-->
<identity>
<dns value="VPS" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="wsDualHttpBinding.SampleServiceBehavior">
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="true"/>
<serviceCredentials>
<userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="VetChat.Service.UserNamePassValidator, VetChat.Service" />
<serviceCertificate findValue="MyName" storeLocation="CurrentUser" storeName="TrustedPeople" x509FindType="FindBySubjectName" />
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
Client Config:
<system.serviceModel>
<bindings>
<wsDualHttpBinding>
<binding name="WSDualHttpBinding_IVetChatService" />
</wsDualHttpBinding>
</bindings>
<client>
<endpoint address="http://service.softprodigy.com:8090/VetChatService.svc"
binding="wsDualHttpBinding" bindingConfiguration="WSDualHttpBinding_IVetChatService"
contract="ServiceReference1.IVetChatService" name="WSDualHttpBinding_IVetChatService">
<identity>
<dns value="VPS" />
</identity>
</endpoint>
</client>
<behaviors>
<endpointBehaviors>
<behavior name="CustomBehavior">
<clientCredentials>
<clientCertificate findValue="MyName" x509FindType="FindBySubjectName"
storeLocation="CurrentUser" storeName="TrustedPeople" />
<serviceCertificate>
<defaultCertificate findValue="MyName" storeLocation="CurrentUser" storeName="TrustedPeople" x509FindType="FindBySubjectName" />
<authentication certificateValidationMode="PeerTrust" />
</serviceCertificate>
</clientCredentials>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
Interface:
[ServiceContract(CallbackContract = typeof(ICallback), SessionMode = SessionMode.Required)]
public interface IVetChatService
{
[OperationContract(IsOneWay = true)]
void DoWork();
}
public interface ICallback
{
[OperationContract(IsOneWay = true)]
void Notify(string value);
}
Interface Implementation:
public class VetChatService : IVetChatService
{
public void DoWork()
{
//Thread.Sleep(5000);
OperationContext.Current.GetCallbackChannel<ICallback>().Notify("Hello");
}
}
Validte username password service class:
namespace VetChat.Service
{
class UserNamePassValidator :
System.IdentityModel.Selectors.UserNamePasswordValidator
{
public override void Validate(string userName, string password)
{
if (userName == null || password == null)
{
throw new ArgumentNullException();
}
if (!(userName == UserName && password == Password))
{
//throw new FaultException("Incorrect Username or Password");
}
}
}
public class Service
{
}
}
Call method:
InstanceContext instanceContext = new InstanceContext(new SampleServiceCallback());
ServiceReference1.VetChatServiceClient sampleServiceClient = new ServiceReference1.VetChatServiceClient(instanceContext);
sampleServiceClient.ClientCredentials.ClientCertificate.SetCertificate(
StoreLocation.CurrentUser,
StoreName.TrustedPeople,
X509FindType.FindBySubjectName,
"MyName");
sampleServiceClient.ClientCredentials.UserName.UserName = UserName;
sampleServiceClient.ClientCredentials.UserName.Password = Password;
//sampleServiceClient.Open();
sampleServiceClient.DoWork();
Response Callback:
public class SampleServiceCallback : ServiceReference1.IVetChatServiceCallback
{
#region ISampleServiceCallback Members
public void Notify(string value)
{
MessageBox.Show(value);
}
#endregion
}
Thanks