Exception thrown while trying to send mail through gmail SMTP

Question

The below exception is thrown while trying to send mail by below code:

SMPT server requires a secure connection or the client was not authenticated. The server response was 5.5.1. Authentication required

C#

string E_mail_ID = "hidden";
        try
        {
            SmtpClient gmail_client = new SmtpClient("smtp.gmail.com");
            gmail_client.Port = 587;

            gmail_client.EnableSsl = true;
            gmail_client.Timeout = 100000;
            gmail_client.DeliveryMethod = SmtpDeliveryMethod.Network;
            gmail_client.UseDefaultCredentials = false;
            gmail_client.Credentials = new NetworkCredential("hidden", "hidden");

            MailMessage msg = new MailMessage();
            msg.From = new MailAddress("hidden");
            msg.To.Add(E_mail_ID.Trim());              
            msg.Body = "Request for quotation from Jeet fly ash products, a unit of Vidya shakti niyas";
            msg.Attachments.Add(new Att![enter image description here][1]achment(pdfFile));
            gmail_client.Send(msg);
            MessageBox.Show("RFQ sent to vendor successfully");
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

" SMPT server requires a secure connection or the client was not authenticated. The server response was 5.5.1. Authentication required ". This is the exception which is shown by the message box when I send to a mail address — Jagmeet, Oct 15 '14 at 06:35

score 0 · Answer 1 · answered Oct 15 '14 at 06:43

0

Try the port: 465 - This is ssl for gmail.

Take a look: Configure Gmail-Account Outlook

answered Oct 15 '14 at 06:43

Cadburry

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Same exception is coming. – Jagmeet Oct 15 '14 at 06:49
Hmmm.. are you using Google-Authenticator? & Is POP-Enabled for your account? – Cadburry Oct 15 '14 at 07:21
@Jagmeet:taka look at this thread- using System.Net.Mail instead of System.Web.Mail (because web.mail has issues with ssl) http://stackoverflow.com/questions/32260/sending-email-in-net-through-gmail – Cadburry Oct 16 '14 at 06:54

Exception thrown while trying to send mail through gmail SMTP

1 Answers1