c#阿里云服务器发送邮件

 public static void SendMailUse(){string host = "smtp.lotusest.com";// 邮件服务器smtp.163.com表示网易邮箱服务器    string userName = "s********t.com";// 发送端账号   string password = "11111111";// 发送端密码(这个客户端重置后的密码)
SmtpClient client = new SmtpClient();client.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式    client.Port = 80;//gmail的端口号client.Host = host;//邮件服务器client.UseDefaultCredentials = true;client.Credentials = new System.Net.NetworkCredential(userName, password);//用户名、密码//string strfrom = userName;string strto = "2694215660@qq.com";string strcc = "2694215660@qq.com";//抄送string subject = "这是测试邮件标题5";//邮件的主题             string body = "测试邮件内容5";//发送的邮件正文  
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();msg.From = new MailAddress(strfrom, "xyf");msg.To.Add(strto);msg.CC.Add(strcc);msg.Subject = subject;//邮件标题   msg.Body = body;//邮件内容   msg.BodyEncoding = System.Text.Encoding.UTF8;//邮件内容编码   msg.IsBodyHtml = true;//是否是HTML邮件   msg.Priority = MailPriority.High;//邮件优先级   try{client.Send(msg);Console.WriteLine("发送成功");}catch (System.Net.Mail.SmtpException ex){Console.WriteLine(ex.Message, "发送邮件出错");}}