发送SendGrid的SMTP邮件不起作用

Question

这是我在IdentityConfig.cs文件中的简单EmailService类。

public class EmailService : IIdentityMessageService
{
    public Task SendAsync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.
        // return Task.FromResult(0);
        const string userName = "ashish_qluto";
        const string from = "[email protected]";
        const string password = "xxxxxx";
        //const int port = 587;

        var smtpClient = new SmtpClient("smtp.sendgrid.net", Convert.ToInt32(587));

        smtpClient.Port = 587;
        // smtpClient.ServicePoint.MaxIdleTime = 1;
        smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtpClient.UseDefaultCredentials = false;

        // smtpClient.Credentials = new NetworkCredential(userName, password);
        NetworkCredential credentials = new NetworkCredential(userName, password);
        smtpClient.EnableSsl = true;
        smtpClient.Credentials = credentials;

        var mailMessage = new MailMessage(from, message.Destination);
        mailMessage.Subject = message.Subject;
        mailMessage.Body = message.Body;

        return smtpClient.SendMailAsync(mailMessage);
    }
}

这是我的Register方法的POST版本，在成功注册后，我尝试在其中发送电子邮件链接。

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
        var result = await UserManager.CreateAsync(user, model.Password);
        if (result.Succeeded)
        {
            var code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
            var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
            await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking this link:");
            //ViewBag.Link = callbackUrl;
            return View("CheckYourEmail");
        }
        AddErrors(result);
    }

    // If we got this far, something failed, redisplay form
    return View(model);
}

我看过许多有关邮件发送的文章。我的web.config文件中未配置任何内容。我只是将这两个类中的所有内容都硬编码了。

• 我仅使用UserName而不是gmail帐户名。
• 我已经注册了SendGrid免费帐户。我已经在需要的地方正确放置了用户名，密码和电子邮件帐户名。
• 我正在本地主机上对此进行测试。我读过某处不要在本地主机上进行部署。在外部服务器上试用。我也已部署。
• 我没有在Windows Azure上为免费的SendGrid帐户配置任何内容。我浪费了一整天弄清楚它，并尝试了多种选择。我得到的错误是-

我已将端口号从527更改为465，如SSL的SendGrid文档中所建议。现在，我收到以下错误消息-异常详细信息：System.Net.Mail.SmtpException：语法错误，无法识别命令。服务器响应为：并且导致错误的行是---

  var callbackUrl = Url.Action("ConfirmEmail","Account",new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
       /// this function SendEmailAsync is causing Syntax error
        await UserManager.SendEmailAsync(user.Id,"Confirm your account","Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");

        return View("CheckYourEmail");

整个堆栈跟踪在这里--- http://pastebin.com/yMiZaS9Q

Answer 1

const string userName = "ashish_qluto";

需要。。

const string userName = "apikey";

对于密码...

const string password = "xxxxxx";  // xxxxxx = sendgrid api key

请参阅sendgrid smpt文档以获取更多详细信息。

https://sendgrid.com/docs/for-developers/sending-email/getting-started-smtp/