Failure sending mail?

Question

I have a problem in this code i am new please help me

Error is : Failure sending mail.

Inner Exception is : Unable to connect to the remote server.

Here is my code:

    try
{
    MailMessage message = new MailMessage();
    SmtpClient smtp = new SmtpClient();
    message.To.Add(emaild_id);
    message.From = new MailAddress(my_email_id);
    message.Subject = "Info";
    message.Body = "something.....";
    smtp.Port = 587;
    smtp.Host = "smtp.gmail.com";
    smtp.EnableSsl = true;
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential(strFromMail, strPassword);
    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
    smtp.Send(message);
    MessageBox.Show("Mail has been sent successfully.");
}
catch (Exception ErrMessage)
{
            MessageBox.Show(ErrMessage.Message, "ASCEND", MessageBoxButtons.OK, MessageBoxIcon.Error);
 }

Throw the exception correctly...example : catch(exception ex){throw ex} — Rajeesh Menoth, Jan 07 '16 at 05:25
Change the catch block this catch(exception ex){throw ex} . Then check it. — Rajeesh Menoth, Jan 07 '16 at 05:33
check if any antivirus is blocking the sending of mails. Usually anitvirus like mcafee has email scanner that may block.. just turn it off and see.. — Vinoth, Jan 07 '16 at 05:35
I have changed now i get this error **Unable to read data from the transport connection: net_io_connectionclosed** — Bhuvana S, Jan 07 '16 at 05:50
Check the reference : http://stackoverflow.com/questions/20228644/smtpexception-unable-to-read-data-from-the-transport-connection-net-io-connect — Rajeesh Menoth, Jan 07 '16 at 05:59
If your hosting provider does not allow outbound 587, you may need to use HTTP instead. For example, you might use the Gmail API: https://developers.google.com/gmail/api/guides/ Even locally, you might consider using HTTP. — Michael, Jan 14 '17 at 22:13

score 0 · Answer 1 · answered Jan 07 '16 at 05:59

0

Try using Port number 465 instead of 587

answered Jan 07 '16 at 05:59

Kiran Viradiya

121
7

Which namespace are you using to send an email? System.Web.Mail OR System.Net.Mail? – Kiran Viradiya Jan 07 '16 at 06:24
System.Net.Mail only using – Bhuvana S Jan 07 '16 at 06:45
Try using System.Web.Mail. I know it is deprecated, but, it may resolve your issue Ref: http://stackoverflow.com/questions/1011245/how-can-i-send-emails-through-ssl-smtp-with-the-net-framework/1014876#1014876 – Kiran Viradiya Jan 07 '16 at 07:09

Failure sending mail?

1 Answers1