Question

我正在使用以下基本代码：

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();

msg.to.add("someone@hotmail.com");
msg.to.add("someone@gmail.com");
msg.to.add("someone@myDomain.com");

msg.From = new MailAddress("me@myDomain.com", "myDomain", System.Text.Encoding.UTF8);
msg.Subject = "subject";
msg.SubjectEncoding = System.Text.Encoding.UTF8;
msg.Body = "body";
msg.BodyEncoding = System.Text.Encoding.UTF8;
msg.IsBodyHtml = false;

//Add the Creddentials
SmtpClient client = new SmtpClient();
client.Host = "192.168.0.24"; 
client.Credentials = new System.Net.NetworkCredential("me@myDomain.com", "password");
client.Port = 25;

try
{
   client.Send(msg);
}
catch (System.Net.Mail.SmtpException ex)
{
    sw.WriteLine(string.Format("ERROR MAIL: {0}. Inner exception: {1}", ex.Message,  ex.InnerException.Message));
}

问题是邮件只发送到我域中的地址（someone@mydomain.com），我得到以下2个地址的以下异常：

System.Net.Mail.SmtpFailedRecipientException：邮箱不可用。服务器响应是：此位置没有此类域

我怀疑它与阻止我的smtp客户端的东西有关，但不知道如何处理这个问题。任何的想法？谢谢！

Answer 1

Ron是正确的，只需使用587端口，它就可以正常工作。

检查此代码并查看其是否有效：

using System;
using System.Windows.Forms;
using System.Net.Mail;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                MailMessage mail = new MailMessage();
                SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

                mail.From = new MailAddress("your_email_address@gmail.com");
                mail.To.Add("to_address@mfc.ae");
                mail.Subject = "Test Mail";
                mail.Body = "This is for testing SMTP mail from GMAIL";

                SmtpServer.Port = 587;
                SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");
                SmtpServer.EnableSsl = true;

                SmtpServer.Send(mail);
                MessageBox.Show("mail Send");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
    }
}

Answer 2

尝试使用port = 587。这是有用的相关链接：http://mostlygeek.com/tech/smtp-on-port-587/comment-page-1/

信箱不可用。服务器响应是：此位置没有此类域

2 个答案: