Not sure if it's normal, but I get a '?' too - 'though my emails send ok.
For the record, the code for my UE server behaviour looks like this:
if ((($_SERVER["REQUEST_METHOD"] == "POST") && (isset($_SERVER["HTTP_REFERER"]) && strpos(urldecode($_SERVER["HTTP_REFERER"]), urldecode($_SERVER["SERVER_NAME"].$_SERVER["PHP_SELF"])) > 0) && isset($_POST))) {
//WA Universal Email object="mail"
//Send Loop Once Per Entry
$RecipientEmail = "".($WAGLOBAL_Contact_Email_To) ."";include("WA_Universal_Email/WAUE_enquiries_1.php");
