AuthenticationException:AuthenticationMechanismTooWeak:5.7.14

Question

我在Web应用程序上使用MVC ASP.NET Core 1.1.2.我尝试使用MailKit 1.18.1.1创建联系表单.我通过电子邮件(gmail)发送联系表格信息.当我在本地构建网页时,一切都按预期工作.我第一次在本地运行程序,它给了我同样的错误,但我启用了我的邮件地址的安全设置,它开始工作.但是当我在网络上部署它时,即使我设置安全设置以启用安全性较低的应用程序,它也会给我一个这样的错误:

这是Home Controller中的SendMail方法:

public IActionResult SendMail(string name, string phone, string email, string msg)
        {
            var message = new MimeMessage();
            message.From.Add(new MailboxAddress ("theemailaddress@gmail.com"));
            message.To.Add(new MailboxAddress("theemailaddresswhichrecievestheinfo@gmail.com"));
            message.Subject = name;
            message.Body = new TextPart("html")
            {
                Text = "Kimden: " + name + "<br>" + "Mail adresi: " + email + "<br>" +
                "Mesaj: " + msg + "<br>" + "Telefon: " + phone
            };

            using (var client = new SmtpClient())
            {
                client.Connect("smtp.gmail.com", 587);
                client.Authenticate("theemailaddress@gmail.com", "thepassword(I am sure it's correct)");
                client.Send(message);
                client.Disconnect(false);
            }

            return View("Contact");
        }

这是我的表单的Contact.cshtml代码:

@using (Html.BeginForm("SendMail", "Home"))
                {
            <div class="contactForm">
              <form action="" method="POST" role="form" class="form">
                <div class="form-group">
                  <input name ="name" type="text" class="form-control" id="" placeholder="Ad?n">
                </div>
                <div class="form-group">
                  <input name ="email" type="email" class="form-control" id="" placeholder="Mail Adresin">
                </div>
                <div class="form-group">
                  <input name="phone" type="text" class="form-control" id="" placeholder="Telefonun">
                </div>
                <div class="form-group">
                  <textarea name="msg" class="form-control" id="" placeholder="Mesaj?n"></textarea>
                </div>
                <button type="submit" class="btn buttonCustomPrimary">Mesaj gönder</button>
              </form>
            </div>
                }

Answer 1

确保您已启用对"不可靠"来源的帐户访问权限:https://myaccount.google.com/lesssecureapps