Remote web server cant send email by my ASP.NET 4 applicaiton

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My site has some functionality to send email to user some perspective. I have done this. My method can sending email successfully when i am running this application from Visual Studio or My local IIS 7 server (I Configured My PC). But the remote online web server can't send email. Please give me some tips how can i solve this issue. I have already gave lot of time to google but not found this solution. My code

const string fromAddress = "ejobsbdinfo@gmail.com";
const string fromPassword = "password";
string toAddress = account.Email;
string subject = "subject";
string body = "mail Body";
var smtp = new System.Net.Mail.SmtpClient();
{
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.EnableSsl = true;
smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
smtp.Timeout = 20000;
}
smtp.Send(fromAddress, toAddress, subject, body);

give me some instruction how can i solve this problem.

Posted 27-Mar-13 20:15pm

Member 9399759

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Bernhard Hiller 28-Mar-13 4:11am

what's the error message?

Member 9399759 28-Mar-13 4:32am

Thanks for reply , The exception is bellow....

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

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Bernhard Hiller · Answer 1 · 2013-03-27T22:47:00

Solution 1

Look at
http://stackoverflow.com/questions/2391079/gmail-c-sharp-web-config-send-mail-works-programmatically-throws-exception[^]:
Is your web.config ok?

Posted 27-Mar-13 22:47pm

Bernhard Hiller

Rekhash · Answer 2 · 2013-03-28T01:54:00

C#

using System.Net;
using System.Net.Mail;

C#

public partial class RegistrationForm : System.Web.UI.Page
   {
    
       protected void Page_Load(object sender, EventArgs e)
       {

       }

C#

protected void send mail(object sender, EventArgs e)
     {

NetworkCredential cred = new NetworkCredential(email Id, Password);
            MailMessage msg = new MailMessage();
            msg.To.Add(TextBox4.Text);
            msg.Subject = "Welcome To Website";
           
            msg.Body = "You Have Successfully Registered" ;
            msg.From = new MailAddress("welcome@gmail.com"); // Your Email Id
            SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
            SmtpClient client1 = new SmtpClient("smtp.mail.yahoo.com", 465);
            client.Credentials = cred;
            client.EnableSsl = true;
            client.Send(msg);

}

}