如何发送“安全电子邮件”？ [复制]

Question

当某人忘记了他们的帐户密码时，我试图向他们发送一封电子邮件，但每次我尝试时都显示“SMTP 服务器需要安全连接或客户端未经过身份验证。我该如何解决这个问题？

            mailLogin = new NetworkCredential(Email, Password);
            client = new SmtpClient("smtp.gmail.com");
            client.Port = 587;
            client.Credentials = mailLogin;
            client.EnableSsl = false;
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            msg = new MailMessage { From = new MailAddress(Email, Name, Encoding.UTF8) };
            msg.To.Add(new MailAddress(Email));
            msg.Subject = "Subject";
            msg.Body = "Message";
            msg.BodyEncoding = Encoding.UTF8;
            msg.IsBodyHtml = true;
            msg.Priority = MailPriority.Normal;
            msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
            client.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
            string userstate = "Sending...";
            client.SendAsync(msg, userstate);

Answer 1

您需要将 EnableSsl 设置为 true。

client.EnableSsl = true;

然后你必须登录你的谷歌帐户并允许它运行安全性较低的应用程序（设置为开启）