Two quick things, no I can not upgrade to the latest version and I think I have read all posts regarding SMTP.

I am trying to move my sites to a different server that is also hosting some sharepoint stuff.  I am running DNN 3.3.7 on a windows 2003 server. I think there is some tool/dll that is needed on the server to get the SMTP thing to work correctly. I copied the installed directory over from the original box and they are both in the same network and subnet. I have had the relay option made available to the new box from the exchange server that it will point to (not even setup on for the past box since all emails from system are internal). When I hit the SMTP test button, I get the following error:

Error: Host Settings is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Services.Mail.Mail.SendMail(String MailFrom, String MailTo, String Cc, String Bcc, MailPriority Priority, String Subject, Mailformat Bodyformat, Encoding BodyEncoding, String Body, String Attachment, String SMTPServer, String SMTPAuthentication, String SMTPUsername, String SMTPPassword) at DotNetNuke.Services.Mail.Mail.SendMail(String MailFrom, String MailTo, String Bcc, String Subject, String Body, String Attachment, String BodyType, String SMTPServer, String SMTPAuthentication, String SMTPUsername, String SMTPPassword) at DotNetNuke.Modules.Admin.Host.HostSettingsModule.cmdEmail_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---

I am assuming that something was removed or disabled during part of the sharepoint install. Since sharepoint is a pain to setup, I really do not want to rebuild this computer.

Any help on what DLL's or files are used by the email process would be greatly appreciated.