public Set<String> getSenderIds() throws IOException {
		CSVParser csv = new CSVParser(file);
		Set<String> ids = new TreeSet<String>();
		for (String[] line : csv) {
			/* Adja a listhoz, ha hexakaraktereket tartalmaz 6 hosszsg string.*/
			if (line[2].matches("[0123456789ABCDEF]{6}")) {
				ids.add(line[2]);
			}
		}
		ids.remove("000000");
		csv.close();
		return ids;
	}