If I enable EnableSsl for smtpclient am getting an exception: "The remote certificate is invalid according to the validation procedure."
It means the server certificate isn't valid by regular validation rules. You can simply use this snippet to by-pass it:
public static bool AcceptAllCertificatePolicy(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{ return true; }
public static void SendMail(string body, string to, string subject, string attachFilename)
{
MailMessage message = new MailMessage();
message.Priority = MailPriority.Normal;
message.To.Add(new MailAddress(to));
message.Subject = subject;
message.IsBodyHtml = true;
message.BodyEncoding = System.Text.Encoding.GetEncoding("ISO-8859-9");
message.Body = body;
if (attachFilename != string.Empty)
{
message.Attachments.Add(new Attachment(attachFilename));
}
ServicePointManager.ServerCertificateValidationCallback = AcceptAllCertificatePolicy;
SmtpClient client = new SmtpClient();
client.EnableSsl = true;
client.Send(message);
}
Keywords : Smtpclient, asp.net, system.net.mail, EnableSSL, validation.
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