Swift_Transport_AbstractSmtpTransport::_isFqdn PHP Method

    private function _isFqdn($hostname)
    {
        // We could do a really thorough check, but there's really no point
        if (false !== ($dotPos = strpos($hostname, '.'))) {
            return $dotPos > 0 && $dotPos != strlen($hostname) - 1;
        }
        return false;
    }