c# - 我们可以使用 asp.net 和 c# 从本地主机发送邮件吗？

Question

我正在使用 using System.Net.Mail;

和下面的代码发送邮件

MailMessage message = new MailMessage();
        SmtpClient client = new SmtpClient();

        // Set the sender's address
        message.From = new MailAddress("fromAddress");

     // Allow multiple "To" addresses to be separated by a semi-colon
        if (toAddress.Trim().Length > 0)
        {
            foreach (string addr in toAddress.Split(';'))
            {
                message.To.Add(new MailAddress(addr));
            }
        }
      // Allow multiple "Cc" addresses to be separated by a semi-colon
        if (ccAddress.Trim().Length > 0)
        {
            foreach (string addr in ccAddress.Split(';'))
            {
                message.CC.Add(new MailAddress(addr));
            }
        }
        // Set the subject and message body text
        message.Subject = subject;
        message.Body = messageBody;

        // Set the SMTP server to be used to send the message
        client.Host = "YourMailServer";

        // Send the e-mail message
        client.Send(message);

我为主机提供 client.Host = "localhost";

为此它因错误而落下

No connection could be made because the target machine actively refused it some_ip_address_here

当我使用 client.Host = "smtp.gmail.com";

我得到以下错误

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

我无法通过本地主机发送邮件。请帮助我，我是 c# 的新手，请在代码中纠正我哪里出错了..？

Answer 1

这里是一些用于通过 gmail 发送邮件的代码(来自 stackoverflow 上某处的代码。它类似于此处的代码:Gmail: How to send an email programmatically):

using (var client = new SmtpClient("smtp.gmail.com", 587)
{
  Credentials = new NetworkCredential("yourmail@gmail.com", "yourpassword"),
  EnableSsl = true
})
{
  client.Send("frommail@gmail.com", "tomail@gmail.com", "subject", message);
}