I got a static IP from my ISP and a domain from GoDaddy. I configured DNS in GoDaddy to point to my static IP. So the website works. However, when I tried to lookup reputation of the IP address, I figured out that the reverse DNS points to my ISP's domain and hostname. I've contacted the ISP for configuring reverse DNS on their end, but they said that they don't provide such a service (though I'm not sure whether the person I talked to has the correct info).
So could you clarify where and how can I configure the reverse DNS? Is it something I can do in Apache/Windows on my computer, or is it something only the ISP can do, or do I need to do this in some 3rd-party websites, or any other situation with reverse DNS?