How Send mail without using password parameter in mvc?

private void SendEMail(string emailid, string subject, string body)
{


            MailMessage mailMessage = new MailMessage();

            MailAddress fromAddress = new MailAddress("ikout@ksm.com");

            mailMessage.From = fromAddress;

            mailMessage.To.Add(emailid);

            mailMessage.Body = body;

            mailMessage.IsBodyHtml = true;

            mailMessage.Subject = subject;

            SmtpClient smtpClient = new SmtpClient();
            //smtpClient.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;
            //smtpClient.UseDefaultCredentials = true;
            //smtpClient.EnableSsl = true;
            smtpClient.Host = "192.25.10.89";
            smtpClient.Port = 25;

            smtpClient.Send(mailMessage);


}


i have configured the smtp in my system if i am sending mail that time the .eml stored in my pickup directory but the mail should'nt be received.


please help me what i have to do?