Smtp::readResponse

protected function readResponse()
{
	$response = array();

	do
	{
		$line = $this->readLine();
		if ($line === false)
		{
			return false;
		}

		$response[] = $line;
	}
	while (!preg_match('/^ d{3} ( rn | x20 ) /x', $line));

	return $response;
}