public function checkBlacklistedRecipient($varValue, Contao\DataContainer $dc)
	{
		$objBlacklist = $this->Database->prepare("SELECT COUNT(*) AS count FROM tl_newsletter_blacklist WHERE hash=? AND pid=(SELECT pid FROM tl_newsletter_recipients WHERE id=?) AND id!=?")
									   ->execute(md5($varValue), $dc->id, $dc->id);

		if ($objBlacklist->count > 0)
		{
			throw new Exception($GLOBALS['TL_LANG']['ERR']['blacklisted']);
		}

		return $varValue;
	}