MailKit 显示已发送但未收到的邮件 - .NET Core 1.1

Question

VS2017 中的以下 C# 代码表明邮件发送成功。而且我可以从我的 outlook 帐户的发件箱验证电子邮件确实已成功发送。但是在我的 Yahoo 帐户上，电子邮件甚至在一个多小时后仍不存在。问题：我的代码中是否缺少某些东西 - 我们怎样才能让它工作？注意：我已经在 outlook 的发件箱中验证 From 和 To 邮件地址都是正确的。我正在关注这个 Technet article。

static void Main(string[] args)
{
    try
    {
        //From Address
        string FromAddress = "myfromEmail@hotmail.com";
        string FromAdressTitle = "Email from ASP.NET Core 1.1";
        //To Address
        string ToAddress = "myToEmail@yahoo.com";
        string ToAdressTitle = "Microsoft ASP.NET Core";
        string Subject = "Hello World - Sending email using ASP.NET Core 1.1";
        string BodyContent = "ASP.NET Core was previously called ASP.NET 5. It was renamed in January 2016. It supports cross-platform frameworks ( Windows, Linux, Mac ) for building modern cloud-based internet-connected applications like IOT, web apps, and mobile back-end.";

        //Smtp Server
        string SmtpServer = "smtp.live.com";
        //Smtp Port Number
        int SmtpPortNumber = 587;

        var mimeMessage = new MimeMessage();
        mimeMessage.From.Add(new MailboxAddress(FromAdressTitle, FromAddress));
        mimeMessage.To.Add(new MailboxAddress(ToAdressTitle, ToAddress));
        mimeMessage.Subject = Subject;
        mimeMessage.Body = new TextPart("plain")
        {
            Text = BodyContent

        };

        using (var client = new SmtpClient())
        {

            client.Connect(SmtpServer, SmtpPortNumber, false);
            // Note: only needed if the SMTP server requires authentication
            // Error 5.5.1 Authentication 
            client.Authenticate(FromAddress, "myFromEmailpassword");
            client.Send(mimeMessage);
            Console.WriteLine("The mail has been sent successfully !!");
            Console.ReadLine();
            client.Disconnect(true);

        }
    }
    catch (Exception ex)
    {
        throw ex;
    }
}

Answer 1

终于，一个小时后，我在我的雅虎帐户上收到了电子邮件。不知道为什么 yahoo 花了一个多小时，但 outlook 立即发送了它。感谢那些可能尝试提供帮助但可能没有发现代码错误的人。

Observation：在收到的电子邮件中，我可以看到，在 To 字段中 ToAdressTitle as Microsoft ASP.NET Core（正如预期的那样上面的代码）。但是在 From 字段中，我只看到 FromAddress 而不是 FromAdressTitle 作为 Email from ASP.NET Core 1.1 （如上面的代码所示）。我想知道为什么？

MailKit 显示已发送但未收到的邮件 - .NET Core 1.1

MailKit shows mail sent but not received - .NET Core 1.1

c#

mailkit

.net-core