C# MVC 5 Identity 2.0注册电子邮件确认问题

有人能看一下下面的代码，看看是什么导致了错误“在处理您的请求时发生了错误”？我正在使用ASP.NET Identity 2.0，请参见下面的代码：

IdentityConfig

public class EmailService : IIdentityMessageService
{
    public Task SendAsync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.
        var credentialUserName = "info@ourdoamin.com";
        var sentFrom = "noreply@ourdoamin.com";
        var pwd = "ourpassword";

        // Configure the client:
        System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("mail.ourdoamin.com");

        client.Port = 25;
        client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;

        // Creatte the credentials:
        System.Net.NetworkCredential credentials = new System.Net.NetworkCredential(credentialUserName, pwd);
        client.EnableSsl = false;
        client.Credentials = credentials;

        // Create the message:
        var mail = new System.Net.Mail.MailMessage(sentFrom, message.Destination);
        mail.Subject = message.Subject;
        mail.Body = message.Body;

        return Task.FromResult(0);
    }
}

出于明显的原因，出于安全原因，我没有在上面的代码中使用正确的凭据，但是我在同一个项目中有一个使用正确凭据的联系人表单，并且电子邮件工作得非常好

如果我注释掉上面的代码（公共类EmailService:IIdentityMessageService{public Task SendAsync（IdentityMessage message）{return Task.FromResult（0）；}}}除外），注册过程将成功完成

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任何帮助都将不胜感激：-）

问题在于行

返回任务。FromResult（0）

应该是

返回client.SendMailAsync（mail）取而代之的是，现在一切都正常了：-）
在我看来，使用await更为正确（至少在identity>=2.0的版本中是这样）

public class EmailService : IIdentityMessageService
{
    public async Task SendAsync(IdentityMessage message)
    {
        await configSMTPasync(message);
    }

    // send email via smtp service
    private async Task configSMTPasync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.
        var credentialUserName = "info@ourdoamin.com";
        var sentFrom = "noreply@ourdoamin.com";
        var pwd = "ourpassword";

        // Configure the client:
        System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("mail.ourdomain.com");

        client.Port = 25;
        client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;

        // Creatte the credentials:
        System.Net.NetworkCredential credentials = new System.Net.NetworkCredential(credentialUserName, pwd);
        client.EnableSsl = false;
        client.Credentials = credentials;

        // Create the message:
        var mail = new System.Net.Mail.MailMessage(sentFrom, message.Destination);
        mail.Subject = message.Subject;
        mail.Body = message.Body;

        await client.SendMailAsync(mail);
    }
}