public function buildServerString() {
		$serverName = env('SERVER_NAME') ?: gethostname();
		if (!$serverName) {
			$user = env('USER');
			$logName = env('LOGNAME');
			if ($user || $logName) {
				$serverName = $user . '@' . $logName;
			}
		}

		return $serverName ?: null;
	}