sending email from Controller mvc4 - asp.net-mvc-4

Question

I am trying to send send email through below action method
[HttpPost]
public ActionResult ForgotPassword1()
{
dbAlKhaleejEntities _context = new dbAlKhaleejEntities();
var email = Request["Email"];
var email_adress = _context.CUSTOMERs.First(em => email == em.CUSTOMER_EMAIL);
var mailto = email_adress.CUSTOMER_EMAIL;
MailMessage msg = new MailMessage();
SmtpClient client = new SmtpClient("smtp.gmail.com");
client.Credentials = new NetworkCredential("umairliaquat63#gmail.com", "abc");
client.Host = "smtp.gmail.com";
client.Port = 587;
msg.From = new MailAddress("umairliaquat63#gmail.com");
msg.To.Add(mailto);
msg.Subject = "Password recovery";
msg.Body = "Test Recovering the password";
msg.IsBodyHtml = true;
msg.Priority = MailPriority.High;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Send(msg);
return RedirectToAction("forgetPassword");
}
but at line "client.Send(msg)" , it is throwing exception "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required". How I should solve this problem

Answer 1

As far as I know you don't need write your own code cause SmtpClient can use your configuration:
<system.net>
<mailSettings>
<smtp from="It's me <its#my.email>">
<network host="smtp.ip.or.domain" port="527" defaultCredentials="false" userName="noreply" password="12345" enableSsl="true"/>
</smtp>
</mailSettings>
</system.net>
Verify your mail settings twice. In addition, the SMTP server can reject connections for IP's from a black list, or not from a white list. The SMTP server can detect your mail as a spam.
You can use your own local SMTP or specialized servises to mass mailings.

Answer 2

Try this snippet :
using (var client = new SmtpClient(SmtpServerHost, SmtpPort)
{
Credentials = new NetworkCredential(NetworkCredentialUserName, Password),
EnableSsl = this.enableSSL
}
)
{
MailMessage msg = new MailMessage();
msg.From = new MailAddress(FromMailingAddress);
msg.Subject = this.Subject;
}