Yes, we did have Do-24s in the NEI, but the MLD-KNIL never existed. The NEI Army was the KNIL (Koninklijk Nederlandsch-Indisch Leger, or Royal Netherlands Indies Army) and its air arm was originally known as the LA (Luchtvaart Afdeling or Air Department), being renamed ML (Militaire Luchtvaart or Military Aviation) or to give its full title ML-KNIL. The ML, together with the rest of the KNIL, was disbanded in 1950 after Indonesia became independent.
The MLD (Marine Luchtvaart Dienst, or Naval Air Service) operated the Do-24s (as well as PBY-5s), and was a totally separate service, being part of the Royal Netherlands Navy
The MLD still exists but no longer operates fixed-wing aircraft (let alone flying boats), the last of its Orions being sold off a few years ago. Nowadays the service only operates helicopters.