通过需要身份验证的smtp服务器发邮件的问题？？？！！！！

一个程序需要发邮件，可是我们的smtp服务器不让匿名，于是去csdn查到了这个，

编译没有问题，可是发送的时候出现了这个错误，兄弟们看看这是怎么了？？？？

错误：

System.Runtime.InteropServices.COMException (0x80040211): The message could not be sent to the SMTP server. The transport error code was 0x80040217. The server response was not available at CDO.MessageClass.Send() at OnlineService.testl.Button1_Click(Object sender, EventArgs e) in d:\web\onlineservice\testl.aspx.cs:line 74

 

http://www.csdn.net/Develop/Read_Article.asp?Id=14850

---

//在reference中添加CDO for Windows 2000

using CDO;

 

public void SendEmail()
{

   try
   {
    Configuration conf=new ConfigurationClass();
   
    conf.Fields[CdoConfiguration.cdoSendUsingMethod].Value=CdoSendUsing.cdoSendUsingPort;
    conf.Fields[CdoConfiguration.cdoSMTPServer].Value="smtp.netease.com";
    conf.Fields[CdoConfiguration.cdoSMTPServerPort].Value=25;
    conf.Fields[CdoConfiguration.cdoSMTPAccountName].Value="hydnoahark";
    conf.Fields[CdoConfiguration.cdoSendUserReplyEmailAddress].Value="\"hydnoahark\" <hydnoahark@netease.com>";
    conf.Fields[CdoConfiguration.cdoSendEmailAddress].Value="\"hydnoahark\" <hydnoahark@netease.com>";
    conf.Fields[CdoConfiguration.cdoSMTPAuthenticate].Value=CdoProtocolsAuthentication.cdoBasic;
    conf.Fields[CdoConfiguration.cdoSendUserName].Value="hydnoahark";
    conf.Fields[CdoConfiguration.cdoSendPassword].Value="xxx";
    
    conf.Fields.Update();

    MessageClass msg=new MessageClass();
    msg.Configuration=conf;

    msg.To="hydnoahsark@sina.com";
    msg.Subject="Hello";
    msg.TextBody="It's test";
    msg.From="hydnoahark@netease.com";

    msg.Send();   
   }
   catch(System.Runtime.InteropServices.COMException e)
   {
    MessageBox.Show(e.ToString());
   }

   return;
}