[SURBL-Discuss] RFC: significantly reducing FPs on OB

We can probably significantly reduce the false positives on ob.surbl.org, the SURBL list based on Outblaze's URI blacklist:

http://www.surbl.org/lists.html#ob

at the cost of some possibly minor false negatives.

SpamAssassin has live (weekly?) statistics about the performance of their rules, including all SURBL lists, against their ham and spam corpora at their Rule QA site:

http://ruleqa.spamassassin.org/

As you can see OB ranks significantly below the other SURBL lists, with much higher FP rates around 0.1% compared to 0.01% to 0.025% or so. (Note that the Rule QA site seems to have occasional glitches, so if the numbers seem out of range one week, check again later.)

Should we make that change?

Jeff C.