You haven't answered any of the questions that i had asked
who is your host?
In the UE server behavior, what have you set the From address to?
What are you using for the To Address?
What is the SMTP Server set to, and what port?
Depending on the host, you may be able to leave the SMTP Server setting blank, or you may need to enter a valid address.
Also depending on the host, the from address may need to be set to a valid email address for your domain.
It amy be that the host only supports using the Pear Mail for SMTP method of sending the email.
One thing you can do to help troubleshoot is to add the following code just before the closing </body> tag:
<?php var_dump($_SESSION); ?>
and add this code at line 1 to turn on error reporting:
<?php error_reporting(E_ALL); ini_set('display_errors','on'); ?>
This will show if any errors are occurring and also dump the session contents to the page. The session contents will contain the status of passing the email to the SMTP server.