final String[] toAddresses = form.notificationTo.split(",");
        final Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("hostname", systemHelper.getHostname());

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Postbox postbox = ComponentUtil.getComponent(Postbox.class);
        try {

            @Override
            public long getCurrentTimeAsLong() {
                return System.currentTimeMillis();
            }

            @Override
            public String getHostname() {
                return "test-host";
            }

            @Override
            public File createTempFile(String prefix, String suffix) {
                try {

	public final fun getBodyLimit ()J
	public final fun getDelegate ()Lmockwebserver3/MockWebServer;
	public final fun getDispatcher ()Lokhttp3/mockwebserver/Dispatcher;
	public final fun getHostName ()Ljava/lang/String;
	public final fun getPort ()I
	public final fun getProtocolNegotiationEnabled ()Z
	public final fun getRequestCount ()I
	public final fun getServerSocketFactory ()Ljavax/net/ServerSocketFactory;

	public fun <init> ()V
	public fun close ()V
	public final fun enqueue (Lmockwebserver3/MockResponse;)V
	public final fun getBodyLimit ()J
	public final fun getDispatcher ()Lmockwebserver3/Dispatcher;
	public final fun getHostName ()Ljava/lang/String;
	public final fun getPort ()I
	public final fun getProtocolNegotiationEnabled ()Z
	public final fun getProtocols ()Ljava/util/List;
	public final fun getProxyAddress ()Ljava/net/Proxy;

            }

            String hostname = fessConfig.getMailHostname();
            if (StringUtil.isBlank(hostname)) {
                hostname = ComponentUtil.getSystemHelper().getHostname();
            }
            dataMap.put("hostname", hostname);

            logger.debug("\ninfoMap: {}\ndataMap: {}", infoMap, dataMap);

     */
    protected String getHostInfo() {
        final StringBuilder buf = new StringBuilder();
        try {
            final InetAddress ia = InetAddress.getLocalHost();
            final String hostname = ia.getHostName();
            if (StringUtil.isNotBlank(hostname)) {
                buf.append(hostname);
            }
            final String ip = ia.getHostAddress();
            if (StringUtil.isNotBlank(ip)) {

        shutdownHookList.add(hook);
    }

    /**
     * Gets the hostname of the local machine.
     *
     * @return The hostname.
     */
    public String getHostname() {
        final Map<String, String> env = getEnvMap();
        if (env.containsKey("COMPUTERNAME")) {
            return env.get("COMPUTERNAME");
        }
        if (env.containsKey("HOSTNAME")) {