在客户端找不到端点

Question

我有一项服务（EmailSender）。这是配置文件：

<?xml version="1.0"?>
<configuration>
  <connectionStrings>
    <add name="Conn" connectionString="Data Source=localhost;Initial Catalog=DT.DBTest;Integrated Security=True"
      providerName="System.Data.SqlClient" />
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
    <bindings>
      <webHttpBinding>
        <binding name="webHttpBindingWithJsonP" crossDomainScriptAccessEnabled="true" />
      </webHttpBinding>      
    </bindings>
    <services>
      <service name="DT.myapp.Services.PremieraInteraction">
        <endpoint address="" binding="webHttpBinding"
                  bindingConfiguration="webHttpBindingWithJsonP"
                  contract="DT.myapp.Services.IPremieraInteraction"
                  behaviorConfiguration="webHttpBehavior"/>
      </service>
      <service name="DT.myapp.Services.EmailSender">
        <endpoint address="" binding="webHttpBinding"
                  contract="DT.myapp.Services.IEmailSender"
                  behaviorConfiguration="webHttpBehavior"/>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- 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="false"/>
        </behavior>       
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="webHttpBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
 <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>

</configuration>

在另一个（asp.net mvc）应用程序中，我想调用此服务。这是代理类：

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]
    [System.ServiceModel.ServiceContractAttribute(ConfigurationName = "IEmailSender")]
    public interface IEmailSender
    {

        [System.ServiceModel.OperationContractAttribute(Action = "http://tempuri.org/IEmailSender/SendRegistrationEmail", ReplyAction = "http://tempuri.org/IEmailSender/SendRegistrationEmailResponse")]
        void SendRegistrationEmail();

        [System.ServiceModel.OperationContractAttribute(Action = "http://tempuri.org/IEmailSender/SendETicket", ReplyAction = "http://tempuri.org/IEmailSender/SendETicketResponse")]
        void SendETicket();

        [System.ServiceModel.OperationContractAttribute(Action = "http://tempuri.org/IEmailSender/SendTestEmail", ReplyAction = "http://tempuri.org/IEmailSender/SendTestEmailResponse")]
        void SendTestEmail();
    }

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]
    public interface IEmailSenderChannel : IEmailSender, System.ServiceModel.IClientChannel
    {
    }

    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]
    public partial class EmailSenderClient : System.ServiceModel.ClientBase<IEmailSender>, IEmailSender
    {

        public EmailSenderClient()
        {
        }

        public EmailSenderClient(string endpointConfigurationName) :
            base(endpointConfigurationName)
        {
        }

        public EmailSenderClient(string endpointConfigurationName, string remoteAddress) :
            base(endpointConfigurationName, remoteAddress)
        {
        }

        public EmailSenderClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :
            base(endpointConfigurationName, remoteAddress)
        {
        }

        public EmailSenderClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :
            base(binding, remoteAddress)
        {
        }

        public void SendRegistrationEmail()
        {
            base.Channel.SendRegistrationEmail();
        }

        public void SendETicket()
        {
            base.Channel.SendETicket();
        }

        public void SendTestEmail()
        {
            base.Channel.SendTestEmail();
        }
    }

而且，我如何打电话：

Binding binding = new BasicHttpBinding(BasicHttpSecurityMode.None);
EndpointAddress endpointAddress = new EndpointAddress(new Uri("http://localhost:12736/EmailSender.svc"));
EmailSenderClient client = new EmailSenderClient(binding, endpointAddress); 
client.SendTestEmail();

但是，我收到了错误：

There was no endpoint listening at http://localhost:12736/EmailSender.svc that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.

InnerException说：

The remote server returned an error: (404) Not Found.

哪里出错？
感谢。