That is good that you are not having any problems with the other email. The UE server behavior that you have on this page looks like it is configured properly to me. Are you getting to the users_ThankYou.php that is specified as the redirect? If so the code for the email should be getting executed. As a test you should try copying the Universal Email server behavior and include lines to a new blank page and then copy over the form from this page.
If the message will not send with just the UE and the form on the page then it would indicate a problem with the UE server behavior, otherwise it is probably a conflict between the other server behaviors that are on the page.
