请检查我的发邮件的代码为什么错误？

[nobody_am]

MailMessage mail = new MailMessage();
mail.To = "[e-mail]";
mail.From = "[e-mail]";
mail.Subject = "this is a test email.";
mail.Body = "Some text goes here";
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1"); //basic authentication
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "ming0987"); //set your username here
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "123456"); //set your password here

SmtpMail.SmtpServer = "smtp.163.com"; //your real server goes here

SmtpMail.Send( mail );


================错误是：==================================================
异常详细信息: System.Runtime.InteropServices.COMException: The transport failed to connect to the server.

源错误:


行 62： SmtpMail.SmtpServer = "smtp.163.com"; //your real server goes here
行 63：
行 64： SmtpMail.Send( mail );
行 65： }
行 66： }


源文件: c:\inetpub\wwwroot\mailtest\webform1.aspx.cs 行: 64

堆栈跟踪:


[COMException (0x80040213): The transport failed to connect to the server.
]

[TargetInvocationException: 调用的目标发生了异常。]
System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters) +0
System.RuntimeType.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParameters) +473
System.Web.Mail.LateBoundAccessHelper.CallMethod(Object obj, String methodName, Object[] args) +58

[HttpException (0x80004005): 未能访问“CDO.Message”对象。]
System.Web.Mail.LateBoundAccessHelper.CallMethod(Object obj, String methodName, Object[] args) +112
System.Web.Mail.CdoSysHelper.Send(MailMessage message) +1846
System.Web.Mail.SmtpMail.Send(MailMessage message) +153
MailTest.WebForm1.Button1_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\mailtest\webform1.aspx.cs:64
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1277

[foxconn_nich]

SmtpMail.SmtpServer = "smtp.163.com"

这个Smtp邮件服务器不行

[nobody_am]

To foxconn_nich:
JavaMail可以用这个smtp server发邮件，我试过了。
另外请问那个免费邮件服务器可以发？

[sunzhong2003]

可以的，我在www.semhoo.com上试过，只不过要用有用户的发，可以用JMAIL或者CDO发信

[sunzhong2003]

楼主肯定是没给用户名和密码

[nobody_am]

用户名 ming0987 密码123456
肯定是正确有效的

mail message是对cdo的封装。
jmail需要第三方的库吗？

[kele8018]

string Send="[e-mail]";
string SendTo="[e-mail]";
System.Net.Mail.MailMessage Smtpmail = new System.Net.Mail.MailMessage();
System.Net.Mail.MailAddress MASend = new System.Net.Mail.MailAddress(Send);
Smtpmail.From = MASend;
Smtpmail.To.Add(SendTo);
Smtpmail.Subject = "this is a test email";
Smtpmail.Body = "Some text goes here";
System.Net.Mail.SmtpClient SendSmtp = new System.Net.Mail.SmtpClient("smtp.163.com", 25);
SendSmtp.Credentials = new System.Net.NetworkCredential("ming0987", "123456 ");
SendSmtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
SendSmtp.Send(Smtpmail);

[nobody_am]

自己up，你们在.net framework1.1上，怎么发web邮件？

[tanyuqiong]

用jmail试试...

[nobody_am]

貌似 kele8018(怀怀) 提供的代码是vs2005版才支持吧，我先看看vs2003能不能支持。

[nobody_am]

果然vs2003没有System.Net.Mail.MailMessage 命名空间。

[nobody_am]

jmail 也发不出去，错误如下：

－－－
System.Runtime.InteropServices.COMException: The message was undeliverable. All servers failed to receive the message