> Hi all,
>
> I need to know how to authenticate a user before sending a mail using a
> C# application.
>
> The source code i use is this:
>
> private void sendMailButton_Click(object sender, EventArgs e)
> {
> try
> {
> MailMessage mailMessage = new
> MailMessage(toTextBox.Text, fromTextBox.Text, subjectTextBox.Text,
> bodyTextBox.Text);
>
> SmtpClient obj = new SmtpClient(SMTPTextBox.Text);
> obj.Send(mailMessage);
> MessageBox.Show("Message Sent");
>
> }
> catch (Exception ex)
> {
> MessageBox.Show("message not sent");
>
> }
> }
>
> I need to add the authentication part. This is working but with no
> authentication for the user or the mail sender address. I am using a
> local SMTP server.
> Thanks,