Sending Emial Error

Question

Hi,

I am busy with an application that needs to send an email through my company's exchange server. But when my application tries to send the email I get the following error:

The following exception occurred: System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it

 

Here is the code that I am using:

using System;

using System.Collections.Generic;

using System.Text;

using System.Net.Mail;

using System.Net;

using PMonThread.Properties;

namespace PMonThread

{

class EMail

{

   public void SendEMail(string body, string subject)

   {

      // initializes the mailmessage object and adds the appropriate values

      MailMessage mail = new MailMessage();

      mail.From = new MailAddress("");

      mail.To.Add("");

      mail.Subject = subject;

      mail.Body = body;

      SmtpClient smtp = new SmtpClient("");

      try

      {

         smtp.Send(mail);

      }catch (Exception ex)

      {

         throw ex;

      }

   }

}