Whitelisting a domain means that it would be anti-blocked by any later submission to any BlackLists and ensuring that the DNS Firewall won't block this and proceed the DNS query and answer process as usual.
This list have it's very own life, as this is a very very tricky one to maintain.
The reason why it's hard to maintain such a list is, it have to balance between what is going on with a domain, that for several reasons might be blacklisted on some lists, but not on others. It can also be that a domain in general do 99,9% rights, but because of it's nature of user based submissions, could do a lot of evil.
If we take the example of Gitlab.com
Gitlab.com is 100% user submitted contents, but for the very same reason also a widely used target from bad guys, to host there evil code. For that rightfully reason Gitlab often pop ups on list for hosting Malware code. Since this would have huge influence on My Privacy DNS and brakes the workflow, it's of curse have to be whitelisted within the DNS firewall projects.
Q: Is it possible to get any domains whitelisted from MypDNS?
A: if you're domain is fully compliant to our believes of how the internet should be like, you get ONE shot to prove it, and that's it, if your domain in any way get caught again in serving any kind of Spyware, Adware, Trackware or other types of Malware, your domain stays for life, and the only thing you can do is to get a new domain name.
Open a ticket and let's have a look at it
Q: But I've been hacked or in other way "innocent" in what have happen on the domain?
A: Well that's sad, but why didn't you use a properly setup server or website their was properly secured? Try you're arguments in a ticket and will see, but don't be too hopeful
Q: Can I in any way pay you to get whitelisted?
A: erhmm... what? You have obviously not done any reading on this site... at all.
Have you seen any treases of commercial interests like spam, Adware, banners, Trackware or any other things like that? NO!
Short answer HELL NO YOU CAN'T pay you're way out of here...