Question

我想从我的c＃application

发送一个简单的测试邮件

我正在使用以下代码

MailMessage mail = new MailMessage("from", "to");
mail.Subject = "TestEmailImportant";
mail.Body = "This mail is to test if this program is working";

SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587);
smtpClient.Credentials = new System.Net.NetworkCredential()
{
    UserName = "xxxxxxxxx@gmail.com",
    Password = "xxxxxx"
};
smtpClient.EnableSsl = true;
smtpClient.Send(mail);
Label1.Text = "Email Sent";

点击按钮即可触发。

每当我点击按钮时，浏览器都会等待主持人＆＃34;大约一分钟后我收到此错误

连接尝试失败，因为连接方没有在一段时间后正确回应，或建立连接失败，因为已连接的主机无法响应＆＃34;某些IP＆＃34;。

指向smtpClient.Send(mail);行。

Answer 1

注册Gmail并转到https://www.google.com/settings/security/lesssecureapps，您可以在其中查看设置。访问安全性较低的应用

Turn off (default) ==> Turn On

添加此代码后，

  MailMessage mail = new MailMessage("fromm@gmail.com", "toaddress@gmail.com");
                mail.Subject = "TestEmailImportant";
                mail.Body = "This mail is to test if this program is working";

                SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587);

                smtpClient.Credentials = new System.Net.NetworkCredential()
                {
                    UserName = "XXXXXX@gmail.com",
                    Password = "YYYYYYYY"
                };

                smtpClient.EnableSsl = true;
                System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate(object s,
                        System.Security.Cryptography.X509Certificates.X509Certificate certificate,
                        System.Security.Cryptography.X509Certificates.X509Chain chain,
                        System.Net.Security.SslPolicyErrors sslPolicyErrors)
                {
                    return true;
                };

                smtpClient.Send(mail);

使用asp.net发送邮件失败。连接主机无法响应

1 个答案: