vs2003下的邮件发送

 using System.Text;
using System.Web.Mail;

 

System.Web.Mail.MailMessage mail = new System.Web.Mail.MailMessage();
                mail.BodyFormat = MailFormat.Html;
                mail.From = "maimaifu@citiz.net";
                
                mail.To = "qhtthq@163.com";
                mail.BodyEncoding = Encoding.GetEncoding("gb2312");
                mail.Subject = "虫虫";
                mail.Body = mailbody.Text;
                mail.Attachments=
                mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusing"] = 2; //基本的认证
                mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"] = "xxxx"; //验证账号：发送者邮箱账号
                mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"] = "xxxx";  //验证密码：发送者邮箱密码
                mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"] = 1;  //验证级别0,1,2
                mail.Fields["http://schemas.microsoft.com/cdo/configuration/languagecode"] = 0x0804; //语言代码  这个代码没去查过
                System.Web.Mail.SmtpMail.SmtpServer = "smtp.163.com";//163邮箱是这个 smtp.163.com
                System.Web.Mail.SmtpMail.Send(mail); 
                Response.Write("<script>alert('发送成功!!!')</"+"script>");