C#

 string host = "192.168.0.22";<br />
            int port = 85;<br />
            string userid = "un";<br />
            string password = "pwd";<br />
<br />
            MailMessage message = BuildMessage();<br />
<br />
            SmtpClient smtp = new SmtpClient(host, port);<br />
            smtp.Credentials = new NetworkCredential(userid, password);<br />
            smtp.SendCompleted += new SendCompletedEventHandler(smtp_SendCompleted);<br />
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network;<br />
            try<br />
            {<br />
                smtp.Send(message);<br />
<br />
                MessageBox.Show("Success!", "Sample", MessageBoxButtons.OK, MessageBoxIcon.Information);<br />
            }<br />
            catch (Exception ex)<br />
            {<br />
                MessageBox.Show(ex.InnerException.Message);<br />
                MessageBox.Show("Failed! \r\n" + ex.Message, "Sample", MessageBoxButtons.OK, MessageBoxIcon.Warning);<br />
            }