We have made some changes to the code in the next release. Where we previously would whitelist the domain of an blocklist so that you would always have access to download that blocklist even if another blocklist would prevent that action, we will no longer be automatically adding domains to the whitelist.
What this means: With the current behavior if you add a blocklist from my.reallycool.domain, we previously would add reallycool.domain to the whitelist. That would prevent my.reallybad.domain from adding reallycool.domain to be blocked, and blocking your access to download the wanted blocklist.
What we are changing: We will no longer add the domains for blocklists to the whitelist.
How this affects you: You will need to check your blocklists and make sure that they are not blocked by a second block list.
Why we changed: We agree that automatically adding domains to a whitelist is not a good idea. We don't like automatically modifying your white and blacklists without express permission or notification. We also can see that if you used a blocklist from, for example, Amazon AWS, this would open all of amazon to your whitelist and this may not be a good thing to do.