function ff_EMail2_validation(element, message)
{
    $reg_exp= "/^[a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.([a-zA-Z]{2,4})$/";
    $result=preg_match($reg_exp, element.value);
    if ($result) 
    {
    	//validar el registro mx del dominio
		$mailparts=explode("@",element.value);
		getmxrr($mailparts[1], $mx_records, $mx_weight);
		$retVal=count($mx_records) > 0
    }
    else 
    {
    	$retVal=false;
    }
    return $retVal;
    
}