fix bugs

added a parameter in

  private function setDomainResults($users, Domain $domain, $val, $info='')

it should contain some information , why the validation didnt succeeded.
Also added some descriptions .
Usage:

if ($isCatchallDomain) {
    if (!$options['catchAllIsValid']) {
         $this->setDomainResults($users, $dom, $options['catchAllIsValid'],'catch all detected');
         continue;
    }
}