Jeff Chan wrote:
Please start testing:
ob.surbl.org
...
This list has about 40k domains on it. We still looking for ways to prune it down, for example by expiring domains that no longer resolve. If someone had a reliable master list of expired domains, that could be very helpful.
I'm very interested in this, as I use my own URLBL plus surlbl. Some time before I was trying to program this, but I had no time to end it.
I'll work on it again, unless there is an efficient solution before.
The problem, to remember, is to quickly check if a bunch of some thousands domains are already valid or not.
Jose-Marcio