E-Mail Heater

int smtp_port = 587; string smtp_server = "obelix@example.com"; string smtp_user = "benutzername"; string smtp_pw = "streng geheim"; string smtp_from = "test@example.com"; string subject = "Mail vom FlowHeater per .NET Script Heater"; public object DoWork() {     string smtp_to = (string)InValues[0].GetString();     string body = (string)InValues[1].GetString();     SmtpClient smtp = new SmtpClient(smtp_server, smtp_port);     smtp.Credentials = new NetworkCredential(smtp_user, smtp_pw);     smtp.EnableSsl = true;     smtp.DeliveryFormat = SmtpDeliveryFormat.SevenBit;     smtp.DeliveryMethod = SmtpDeliveryMethod.Network;     // System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;     System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls13;     MailMessage msg = new MailMessage(smtp_from, smtp_to);     msg.Subject = subject;     msg.Body = body;     try     {         smtp.Send(msg);     }     catch (Exception ex)     {         return false;     }     return true; }