Gmail:如何以编程方式发送电子邮件

Question

可能完全重复:通过Gmail在C#.NET中发送电子邮件

嗨,

我正在尝试使用gmail发送电子邮件:

我尝试了在本网站和其他网站上找到的各种示例,但我总是得到同样的错误:
无法连接到远程服务器 - > System.net.Sockets.SocketException:无法建立连接,因为目标主动拒绝它209.85.147.109:587

    public static void Attempt1()
    {
        var client = new SmtpClient("smtp.gmail.com", 587)
        {
            Credentials = new NetworkCredential("MyEmailAddress@gmail.com", "MyPassWord"),
            EnableSsl = true
        };
        client.Send("MyEmailAddress@gmail.com", "some.email@some.com", "test", "testbody"); 
    }

有任何想法吗？

UPDATE

更多细节.

也许我应该说我做出的其他尝试给了我同样的错误:(注意当我没有指定端口时它尝试端口25)

    public static void Attempt2()
    {
        var fromAddress = new MailAddress("MyEmailAddy@gmail.com", "From Name");
        var toAddress = new MailAddress("MyEmailAddy@dfdf.com", "To Name");
        const string fromPassword = "pass";
        const string subject = "Subject";
        const string body = "Body";
        var smtp = new SmtpClient
        {
            Host = "smtp.gmail.com",
            Port = 587,
            EnableSsl = true,
            DeliveryMethod = SmtpDeliveryMethod.Network,
            UseDefaultCredentials = false,
            Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
        };
        using (var message = new MailMessage(fromAddress, toAddress)
        {
            Subject = subject,
            Body = body
        }
            ) { smtp.Send(message); }
    }


    public static void Attempt3()
    {
        MailMessage mail = new MailMessage();
        mail.To.Add("MyEmailAddy@dfdf.com");
        mail.From = new MailAddress("MyEmailAddy@gmail.com");
        mail.Subject = "Email using Gmail";

        string Body = "Hi, this mail is to test sending mail" +
                      "using Gmail in ASP.NET";
        mail.Body = Body;

        mail.IsBodyHtml = true;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.Credentials = new System.Net.NetworkCredential
             ("MyEmailAddy@gmail.com", "pass");
        smtp.EnableSsl = true;
        smtp.Send(mail);
    }

Answer 1

我正在使用以下代码:

SmtpClient sc = new SmtpClient("smtp.gmail.com");
NetworkCredential nc = new NetworkCredential("username", "password");//username doesn't include @gmail.com
sc.UseDefaultCredentials = false;
sc.Credentials = nc;
sc.EnableSsl = true;
sc.Port = 587;
try {
    sc.Send(mm);
} catch (Exception ex) {
    EventLog.WriteEntry("Error Sending", EventLogEntryType.Error);
}