用C#发送电子邮件？

我正在尝试发送邮件，但此代码引发错误“发送失败”

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请告诉我解决方案？如果您有其他解决方案，请告诉我？

gmail是否为smtp使用了不同的端口，而不是默认的25端口

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您可能需要更改连接到的端口，我认为对于google来说，如果启用SSL，应该是465或587

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还要检查您是否有可能干扰的防病毒软件。AV软件停止定制软件发送电子邮件是很常见的。可能还有一些防火墙不允许您通过所需的端口。

我正在写一个控制台应用程序，请使用此示例进行尝试。 使用您的凭据发送至地址、发件人地址、密码、正文

using System;
using System.Text;
using System.Net.Mail;
using System.Net;

namespace TestingConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string to = "to@domain.com";
                string from = "from@gmail.com";
                string from_pwd = "mypassword";
                string subject = "Sample Mail testing";
                string body = "Wow this is testing body";
                MailMessage mM = new MailMessage();
                mM.From = new MailAddress(from);
                mM.To.Add(to);
                mM.Subject = subject;
                mM.Body = body;
                mM.IsBodyHtml = false;
                mM.Priority = MailPriority.High;
                SmtpClient sC = new SmtpClient("smtp.gmail.com");
                sC.Port = 587;
                sC.Credentials = new NetworkCredential(from, from_pwd);
                sC.EnableSsl = true;
                sC.Send(mM);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message + " " + e.StackTrace);
            }
        }
    }
}

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您得到的确切异常是什么？根据验证过程，远程证书无效。我得到了这个例外

 string to = "";
    string from = "";
    string from_pwd = "";
    MailMessage mM = new MailMessage();
    mM.From = new MailAddress(from);
    mM.To.Add(to);
    mM.Subject = subject;
    mM.Body = body;
    mM.IsBodyHtml = true;
    mM.Priority = MailPriority.High;
    SmtpClient sC = new SmtpClient("smtp.gmail.com");
    sC.Port = 587;
    sC.Credentials = new NetworkCredential(from, from_pwd );
    sC.EnableSsl = true;
    sC.Send(mM);

using System;
using System.Text;
using System.Net.Mail;
using System.Net;

namespace TestingConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string to = "to@domain.com";
                string from = "from@gmail.com";
                string from_pwd = "mypassword";
                string subject = "Sample Mail testing";
                string body = "Wow this is testing body";
                MailMessage mM = new MailMessage();
                mM.From = new MailAddress(from);
                mM.To.Add(to);
                mM.Subject = subject;
                mM.Body = body;
                mM.IsBodyHtml = false;
                mM.Priority = MailPriority.High;
                SmtpClient sC = new SmtpClient("smtp.gmail.com");
                sC.Port = 587;
                sC.Credentials = new NetworkCredential(from, from_pwd);
                sC.EnableSsl = true;
                sC.Send(mM);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message + " " + e.StackTrace);
            }
        }
    }
}