Error in Sending Mail Server Actively Refuesed

[Hardy123]

Hi
I m developing a desktop application using C#
I m trying to use gmail's smtp sever on port 587 but it is giving me an exception that target machine actively refuesd at 74.125.127.109: 587
Can any body help me plz...
My Code is:-

          private void Button1_Click(object sender, EventArgs e)
        {
            SmtpClient SmtpServer = new SmtpClient();
            SmtpServer.Credentials = new System.Net.NetworkCredential("mygmailid@gmail.com", "mypassword");
            SmtpServer.Port = 587;
            SmtpServer.Host = "smtp.gmail.com";
            SmtpServer.EnableSsl = true;
            mail = new MailMessage();
            String[] addr = TextBox1.Text.Split(',');
            try 
            {
                mail.From = new MailAddress("mygmailid@gmail.com", "Developers", System.Text.Encoding.UTF8);
                mail.Subject = TextBox3.Text;
                mail.Body = TextBox4.Text;
                mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
                mail.ReplyTo = new MailAddress(TextBox1.Text);
                SmtpServer.Send(mail);
            }
            catch (Exception ex){
            MessageBox.Show(ex.ToString());
            }
        }

[pdspider]

Hello Hardy

your code is working fine for me,
just replaced

mail.ReplyTo = new MailAddress(Tex tBox1.Text);

with

mail.To.Add(new MailAddress(tex tBox1.Text));


if not for you, please make sure you have entered right credentials

Thanks