Hi:

I am trying to send an e-mail from my application.  I transferred these settings:

<add key="SMTPServer" value="myexchg"/>
  <add key="SMTPRequiresAuthentication" value="false"/>
  <add key="SMTPUseSsl" value="false"/>
  <add key="SMTPPort" value="25"/>
  <add key="SMTPUser" value="user@myDomainName.net"/>
  <add key="SMTPPassword" value="mypassword"/>
  <add key="SMTPTimeoutInMilliseconds" value="30000"/>

to my User.config file.

​I am receiving an error of "host not specified".  

           MailMessage message = new MailMessage();
            message.From = new MailAddress("sender@mydomain.net");

            message.To.Add(new MailAddress("myname@mydomain.net"));

            message.IsBodyHtml = true;

            message.Subject = "<b>This is the subject</b>";
            message.Body = "<b>This is the content</b>";

            SmtpClient client = new SmtpClient();
           
            client.Host = "myhost";

            try
            {
                client.Send(message);
            }
            catch (SmtpException smtpEx)
            {

                string s = smtpEx.Message;

            }
            catch (Exception ex)
            {
                string s = ex.Message;

            }

It works but I need to set the "host" in code.