Spam fight

Im trying to use this :
components/com_user/controller.php
to this

  // If user activation is turned on, we need to set the activation information

      $useractivation = $usersConfig->get( 'useractivation' );

      if ($useractivation == '1')

      {

         jimport('joomla.user.helper');

         $user->set('activation', JUtility::getHash( JUserHelper::genRandomPassword()) );

         $user->set('block', '1');

      }



      // ##### BEGIN: SPAM DOMAIN FILTER #####

      // Kick out spam domains

      $email = $user->get('email');

      if ( strpos($email,"gawab.com") || 

           strpos($email,"mail.ru")  || 

           strpos($email,"list.ru")  || 

           strpos($email,"bk.ru") || 

           strpos($email,"yahoo.co.uk") || 

           strpos($email,"gmail.com") || 

           strpos($email,"minivds.ru") ||

           strpos($email,"nakgirls.ru") ||

           strpos($email,"yandex.ru") ||

           strpos($email,"info1a.cn") ||

           strpos($email,"gooogletartsert.net") ||

           strpos($email,"freemeilaadressforall.net") ||

           strpos($email,"goodemailadressforfree.net") ||

           strpos($email,"5opicforum.cn") ||

           strpos($email,"pozitifff.com") ||

           strpos($email,"2008bases1.net") ||

           strpos($email,"nm.ru") ||

           strpos($email,"goldwoof.net") ||

           strpos($email,"megapochta.cn") ||

           strpos($email,"meta.ua") ||

           strpos($email,"fene4ek.net") ||

           strpos($email,"mail15.com") ||

           strpos($email,"googlemail.com") ||

           strpos($email,"yandex.com") ||

           strpos($email,"inmail24.com") )

      {

         JError::raiseWarning('','e-Mail domain is spam flagged');

         $this->register();

         return false;

      }

      // ##### END: SPAM DOMAIN FILTER #####

http://forum.joomla.org/viewtopic.php?p=1564182

to ban certain spammers on my website, Do i need to edit anything in easysocial or this enough ?