Jeff Chan wrote: > On Saturday, February 18, 2006, 2:36:29 AM, Matt Kettler wrote: > >> While multi-listing is somewhat common in RBLs, it's the vast majority >> of cases in URIBLs. Over 50% of my mail that hits any surbl.org lists >> hits 3 or more of them. >> > > And how many of those are spams versus hams?
That sample was 100% spam. I was not trying to point out FP rate problems, merely that overlap is in fact VERY common on surbl. And again, it's not the over-lap in-and-of-itself that's a problem. It's when the overlap matches nonspam that problems occur. I don't have any nonspam samples onhand with surbl overlap. Only surbl/uribl overlap.
