Sending the Emails With Authentication

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net;

namespace EmailTester
{
    class Program
    {
        static void Main(string[] args)
        {
            SendEmail();
        }
        private static void SendEmail()
        {
            try
            {
                System.Net.Mail.MailMessage message = new MailMessage();

                message.From = new MailAddress("from");
                message.To.Add(new MailAddress("to"));
                message.Subject = "Sub:";
                message.IsBodyHtml = true;
                message.Body = "body";

                SmtpClient emailClient = new SmtpClient("mail.domain.com");
                System.Net.NetworkCredential SMTPUserInfo = new NetworkCredential("username", "Pass");
                emailClient.UseDefaultCredentials = false;
                emailClient.DeliveryMethod = SmtpDeliveryMethod.Network;

                // Set this to true when your mail server is enabled the SSL.
                emailClient.EnableSsl = false;

                emailClient.Credentials = SMTPUserInfo;
                emailClient.Send(message);

            }
            catch (Exception ex)
            {

            }
        }
    }
}