Bug in Hostkarma black list found

[Marc Perkel]

I found a bug in the way my Hostkarna blacklist generates the list which 
led to some false positives. There are servers that look like spammers 
sometimes but lomg term data and white listing and nobl listing was 
supposed to keep these servers off our black list. However what was 
happening is that due to bad processing some of these servers would 
appear on the list for a few hours just to be automatically removed 
later. I would get complaints of people listed but by the time they 
complained the system had already removed them.

Even though the number of false positives was small, even a small number 
is enough to get noticed because in my world a false positive is as bad 
as 100 unblocked spams.

So - for those of you testing my lists you might want to consider doing 
another test run. It should come out better than the last time in 
relation to false positives.