Have you checked if those false positives are in SBL or if they are in XBL?
There were 4 total false positives.
Two of these had a return code of "02". Two of these had a return code of "04". But the latter two were "caught" on the same IP address, so they, perhaps, should be counted as one.
Like I said... the sampling is pitifully small. It is not the amount of FPs that warranted discussion. It was the fact that 100% of the FPs that I happened to find within the past two days ALL showed up "clean" in SpamHaus hours after they were initial blacklisted. This is where I got the idea about checking to see whether this pattern was a fluke or was representative of the overall tendencies.
(Again, I can't say for sure, at this point.)
Rob McEwen