使用ASP.NET MVC C＃从gmail SMTP发送电子邮件

Question

I'm creating app and it return error. This is part of configuration SMTP connection in web.config file:

<system.net>
    <mailSettings>
      <smtp>
        <network host="smtp.gmail.com" 
                 port="587" 
                 userName="mymail@gmail.com" 
                 password="mypassword" 
                 enableSsl="true"
                 defaultCredentials="false"/>
      </smtp>
    </mailSettings>
  </system.net>

And below is code in Helpers controller:

namespace Subscription.Helpers
{
    public static class MailHelper
    {
        private static SmtpClient _smtpClient;

        static MailHelper()
        {
            _smtpClient = new SmtpClient();
        }

        public static void SendEmail(List<string> recipientAddress, string subject, string news)
        {
            using (MailMessage mail = new MailMessage())
            {
                mail.From = new MailAddress("mymail@gmail.com", "Google.com", Encoding.UTF8);

                foreach(string address in recipientAddress)
                {
                    mail.Bcc.Add(new MailAddress(address));
                }

                mail.Subject = subject;
                mail.Body = news;
                mail.SubjectEncoding = Encoding.UTF8;
                mail.BodyEncoding = Encoding.UTF8;
                mail.Priority = MailPriority.High;

                _smtpClient.Send(mail);
            }
        }
    }
}

When I want to send email to all addresses from database it return unhandled exception with communicate: "The SMTP host was not specified" and line "_smtpClient.Send(mail);" in source error. What I'm doing wrong?

Answer 1

First add descriptions to your tag like this:

<smtp deliveryMethod="Network" from="username@gmail.com">

Then in your code behind add smtp.EnableSsl = true; and remove it from you web.config.