Question

我尝试使用以下代码发送电子邮件。它托管在godaddy中。

MailMessage mail = new MailMessage("from@gmail.com", "to@gmail.com");
MailMessage mail = new MailMessage("from@gmail.com", "to@gmail.com");
SmtpClient client = new SmtpClient();
client.Port = 25;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Host = "smtp.gmail.com";
mail.Subject = "Test email";
string body;
using (var sr = new StreamReader(HttpContext.Current.Server.MapPath("~/App_Data/Template/") + "Email.html"))
{
    body = sr.ReadToEnd();
}
string messageBody = string.Format(body, name, expDate);
mail.Body = messageBody;
Attachment doc = new Attachment(HttpContext.Current.Server.MapPath("~/App_Data/class_3b.pdf"));
mail.Attachments.Add(doc);
client.Send(mail);

但我收到错误：

{System.Net.Sockets.SocketException（0x80004005）：连接尝试失败，因为关联方在a之后没有正确回应一段时间，或建立的连接失败，因为连接主持人未能回复74.125.130.109:25 at System.Net.Sockets.Socket.DoConnect（EndPoint endPointSnapshot， SocketAddress（socketAddress）at System.Net.ServicePoint.ConnectSocketInternal（Boolean connectFailure，插座s4，插座s6，插座＆amp; socket，IPAddress＆amp;地址， ConnectSocketState状态，IAsyncResult asyncResult，Exception＆amp; 例外）}

Answer 1

您需要进行身份验证。例如，请参阅Send Email via C# through Google Apps account。谷歌甚至检查认证地址和＆＃34;来自＆＃34;地址对应...

Answer 2

要使用System.Net.Mail发送邮件，您需要使用web.config的这些值在应用程序的mailSettings:文件中配置SMTP服务

<system.net>
    <mailSettings>
      <smtp from="your email address">
        <network host="relay-hosting.secureserver.net" port="25" userName="your email address" password="******" defaultCredentials="true"/>
      </smtp>
    </mailSettings>
  </system.net>

后面的代码：

MailMessage message = new MailMessage();
message.From = new MailAddress("your email address");

message.To.Add(new MailAddress("your recipient"));

message.Subject = "your subject";
message.Body = "content of your email";

SmtpClient client = new SmtpClient();
client.Send(message);

发送邮件失败 - c＃ - godaddy

2 个答案: