new dns helper class

core/Helper/DnsHelper.php

@@ -30,7 +30,7 @@ class DnsHelper
         $vars['maildomain'] = $this->params['domain'];
         $spfConfig = $this->productManager->get('spf_string');
         $dmarcConfig = $this->productManager->get('dmarc_string');
-        if($clientDomains['totalresults'] == 0){
+        if($this->clientDomains['totalresults'] == 0){
             $vars['selfdomain'] = FALSE;
             $vars['dmarcconfig'] = $dmarcConfig;
             $vars['spfconfig'] = $spfConfig;