Hello , I send email on GoDaddy site ( from my .NET application):
mail.From = new MailAddress("
[email protected]");
        mail.To.Add(emailadmin);
        mail.Subject = "Subj";
        mail.IsBodyHtml = true;
        mail.Body = Body;
        ...
        smtp.Host = "relay-hosting.secureserver.net";
        smtp.Port = 25;
        smtp.EnableSsl = false;
        smtp.Send(mail);
but I have received the error :
  The 
server response was: mail 
server permanently rejected message (#5.3.0)
else I have tried this code :
        smtp.Host = "relay-hosting.secureserver.net";
        smtp.Credentials = new NetworkCredential("
[email protected]", "password");
        smtp.Port = 25;
        smtp.EnableSsl = false;
but get same error. Please advice.