Hi,

Is it possible to use this on a debian 10 server?
I created a c# program with the easendmail package but it seems like that it doesn't work on linux.

My Code:
SmtpMail oMail = new SmtpMail("mykey");

oMail.From = fromEmail;
oMail.To = toEmail;

oMail.Subject = "Subject";
oMail.TextBody = "Body";

SmtpServer oServer = new SmtpServer(exchange);
oServer.User = email;
oServer.Password = pass;
oServer.Port = 25;


Console.WriteLine("start to send email ...");

SmtpClient oSmtp = new SmtpClient();
oSmtp.SendMail(oServer, oMail);

Console.WriteLine("email was sent successfully!");

I always get this error:


Is there any soluten for this?

Thanks in advance