At the command prompt type "NSLOOKUP <enter>".
This will give you a ">" prompt.
Type "set type=MX <enter>".
Type "simpledns.plus <enter>".
You should now get the MX records for "simpledns.plus".
An easier alternative (which also works on Win9x) would be to use the DNS Look Up tool in Simple DNS Plus.
Trouble logging in? Simply enter your email address OR username in order to reset your password.
For faster and more reliable delivery, add firstname.lastname@example.org to your trusted senders list in your email software.