I have buy merak mailserver for 15 month ago. And I has had to reinstall the server 4-5 times in the last year. The license key you get when you buy it, will only work the first time you install the server. After then you have to contact merak to get a new one. And it is take a lot of time and they never work first time. But now that my lisens is over 12 month, then i cant get a key any more, whitour have to buy a new 12month lisens update. So the product i have buy for 15 monthe ago is ony working 1 year (if you need to reinstall) So dont get fooled buy there price on 79USD, it is for every year. Then it is very expensive. We do not use merak any more on our servers after this.