from IIS and Server and Godaddy Mail Not Seding

Question

   

below code 

string subject = "Your Password";
                   string body = "Password :" + data.password;
                   //"<b>"+mailInfo.Body+" </b><br/>" + lnkHref;

                   MailMessage mail = new MailMessage();
                   SmtpClient SmtpServer = new SmtpClient("mail.****.com");

                   mail.From = new MailAddress("*****@domain.com");

                   mail.To.Add(EmailId);
                   mail.Subject = subject;
                   mail.Body = body;
                   SmtpServer.Port = 587;
                   SmtpServer.Credentials = new System.Net.NetworkCredential("*****@domain.com", "*********");
                   SmtpServer.EnableSsl = false;
                   SmtpServer.Send(mail);

 please provide any Solution