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163邮件服务器EnableSsl 需要设置为true

在服务器监控的项目中，采用SmtpClient（邮件服务器采用163）发送总是不成功，后来发现是因为EnableSsl 属性需要设置为true；这也许是163邮件服务器的强制要求，具体代码见下：

String to = ConfigurationManager.AppSettings["toList"];
String from = "xiashiwendao@163.com";
String body = String.Format("服务器：{0}<br/>异常：{1}<br/><br/>请尽快处理！", pServerName, pExceptionMsg);
MailMessage message = new MailMessage();
message.From = new MailAddress(from);
foreach (string item in to.Split(‘;‘))
{
    message.To.Add(item);
}
message.Subject = "业μ务?服t务?器÷异ì常￡报¨警ˉ";
message.Body = body;
message.IsBodyHtml = true;

SmtpClient client = new SmtpClient();
client.Port = 25;
client.Host = "smtp.163.com";
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.EnableSsl = true;
client.Credentials = new NetworkCredential("xiashiwendao@163.com", "Lorry//2");
client.Send(message);
if (this.IsTestMode())
    MessageBox.Show("OK, Send Mail Complete");

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原文：http://www.cnblogs.com/xiashiwendao/p/3590971.html