请问用jmail发邮件时，老提示失败，怎么回事啊？

C# code

          MessageClass email = new MessageClass();                    email.MailServerUserName = "zj0000rd";          email.MailServerPassWord = "***";          email.From = "zj0000rd@163.com";             email.Subject = "jmail";              email.Body = "test jmail send mail";          email.AddRecipient("zj0000rd@163.com", "", "");          email.Send("mail.163.com", false);

[解决办法]
那你要知道163.com邮件服务器的smtp的设置才行。
[解决办法]
要把用户名和密码引用上，否则无法自动登录信箱的，有个例子你看看

C# code

   tring FromMail = "tangsiyanking@sina.com";//发件人             string Title = "test"; //邮件主题             string Body = "test";   //邮件主体             string ShowName = "paladintsy";//显示名字             string MailUserName = "tangsiyanking";             string MailPassword = "xxxxxx";//密码就不给了....             System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();             msg.From = new MailAddress(FromMail,ShowName,System.Text.Encoding.GetEncoding("GB2312"));             msg.Subject = Title;//邮件标题              msg.Body = Body;//邮件内容              msg.Priority = MailPriority.Normal;//邮件优先级               msg.SubjectEncoding = System.Text.Encoding.GetEncoding("GB2312");//标题编码             msg.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");//正文编码             msg.To.Add("seu_tangsiyan@qq.com");              System.Net.Mail.Attachment attTemp = new System.Net.Mail.Attachment("C:\\Documents and Settings\\HellKnight\\My Documents\\My Pictures\\profile.txt");             attTemp.NameEncoding = System.Text.Encoding.GetEncoding("GB2312");//附件名编码             msg.Attachments.Add(attTemp); .....................................................