System.Net.Mail的应用，后端发送邮件

private void btn_send_Click(object sender, EventArgs e) ???????{ ???????????var emailAcount = ConfigurationManager.AppSettings["EmailAcount"]; ???????????var emailPassword = ConfigurationManager.AppSettings["EmailPassword"]; ???????????var reciver = txt_Reciver.Text; ???????????var content = rtxt_Content.Text; ???????????MailMessage message = new MailMessage(); ???????????//设置发件人,发件人需要与设置的邮件发送服务器的邮箱一致 ???????????MailAddress fromAddr = new MailAddress("qwe123@qq.com"); ???????????message.From = fromAddr; ???????????//设置收件人,可添加多个,添加方法与下面的一样 ???????????message.To.Add(reciver); ???????????//设置抄送人 ???????????message.CC.Add("qwe123@163.com"); ???????????//设置邮件标题 ???????????message.Subject = "Test"; ???????????//设置邮件内容 ???????????message.Body = content; ???????????//设置邮件发送服务器,服务器根据你使用的邮箱而不同,可以到相应的 邮箱管理后台查看,下面是QQ的 ???????????SmtpClient client = new SmtpClient("smtp.qq.com", 25); ???????????//设置发送人的邮箱账号和密码 ???????????client.Credentials = new NetworkCredential(emailAcount,emailPassword); ???????????//启用ssl,也就是安全发送 ???????????client.EnableSsl = true; ???????????//发送邮件 ???????????client.Send(message); ???????}