sending mail using razor

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ASP.NET4

Hi,

i want to send a mail using mvc3 and razor.
i already write a code but it was not running.

[HttpPost]
public ViewResult ContactUs(MailModel _objModelMail)
{
if (ModelState.IsValid)
{
MailMessage mail = new MailMessage();
mail.To.Add("abcd@gmail.com");
mail.From = new MailAddress(_objModelMail.From);
mail.Subject = _objModelMail.Subject;
string Body = _objModelMail.Body;
mail.Body = Body;
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "64.31.2.235";
//smtp.Port = 587;
smtp.UseDefaultCredentials = false;
smtp.Credentials = new System.Net.NetworkCredential
("cbcd@phoneafriendcard.com", "@@@@@@");// Enter seders User name and password
smtp.EnableSsl = true;
smtp.Send(mail);
return View("ContactUs", _objModelMail);
}
else
{
return View();
}

}