some hosts will not relay the email message if there is a from display name specified.
in the webassist/email/waue_confirm_1.php page, try changing:
$MailFrom = "O'Keefe Customer Service|WAemail@example.com";
$MailFrom = "firstname.lastname@example.org";
Who is your hosting company? they may require you to enter an smtp server, but this requirement is deferent from host to host.