error sending email using ASP.NET web app

Question

I'm trying to send email to my site users (ASP.NET, VS2010), currently I'm using my gmail account for sending email, but I'm getting the following error:

ex = {"Failure sending mail."}
InnerException = {"The remote name could not be resolved: 'smtp@gmail.com'"}

it is my code:

MailMessage mailObj = new MailMessage("mygmailaccount@gmail.com", "myyahooaccount@yahoo.com", "test", "test2");
            SmtpClient SMTPServer = new SmtpClient("smtp@gmail.com");
            SMTPServer.Credentials = new System.Net.NetworkCredential("mygmailaccount", mygmailpassword);
            try
            {
                SMTPServer.Send(mailObj);
            }
            catch (Exception ex)
            {
                string a = ex.Message;
            }

what is going wrong here? should I do something in my web.config? how can I find smtp server of my own host?

score 6 · Accepted Answer · edited May 23 '17 at 11:56

6

smtp@gmail.com is incorrect. You probably meant smtp.gmail.com. See the following question for a complete example.

Sending email in .NET through Gmail

edited May 23 '17 at 11:56

Community

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answered Feb 16 '12 at 14:32

jrummell

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thanks, I changed it to smtp.gmail.com and got following error:Message = "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. x22sm13327733bkw.11" – Ali_dotNet Feb 16 '12 at 14:35
Look at the answer in the link. The solution is right there. You need to enable SSL and run on port 587 – Morten Anderson Feb 16 '12 at 14:36
yes, thanks, that was just great! but what if I'm going to send email from my own host? how can I find its port and smtp? – Ali_dotNet Feb 16 '12 at 14:39
You will have to ask your email administrator or hosting provider. – jrummell Feb 16 '12 at 14:43

score 1 · Answer 2 · answered Feb 16 '12 at 14:43

you did not set gmail parameters correctly:

SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587);
    smtpClient.EnableSsl = true;
    smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
    smtpClient.Credentials = new NetworkCredential("myGmailAcconut@gmail.com", "password");

error sending email using ASP.NET web app

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