下面是asp.net使用外部stmp服务器发送邮件的代码

public void MailSend(string[] mails) {

try { MailMessage message = new MailMessage(); foreach (string mail in mails) {

 message.To.Add(mail);//收件人地址 } if (txtCC.Text != "") {

 string[] cc = txtCC.Text.Split(';'); foreach (string str in cc) {

message.CC.Add(str);//抄送的地址 } }

message.From = new MailAddress("ceshi@yeah.net", "管理员", System.Text.Encoding.UTF8);

message.Subject =txtTitle.Text.Trim(); //邮件主题

message.IsBodyHtml = true;//是否为html格式的邮件

message.Body = FreeTextBox1.Text;//邮件的内容

string smtp = "smtp.yeah.net";//因为我用的是163的邮箱，所以这里用到的是用163的

SmtpClient sc = new SmtpClient(smtp);//发送邮件用到的smtp主机(用不同的邮箱，stmp定义则不同)

string email = "email";//ConfigurationManager.AppSettings["email"]; string pwd = "pwds";//ConfigurationManager.AppSettings["email_pwd"];

sc.Credentials = new System.Net.NetworkCredential(email,pwd);//邮箱账号与密码

sc.Send(message); //发送邮件 } catch (SmtpException se) { Response.Write("<script>alert('"+se.ToString()+"');</script>"); }