Jeff,
Good job/good idea regarding checking against these domains for FPs!! This may be the final step towards getting the FP rate to where we've wanted it to be.
However, please don't be in too big a hurry to whitelist all of these!
In particular, keep in mind that DMOZ is rather loosely organized and there may not be all that much careful attention as to what gets into DMOZ.
I'd suggest starting out by whitelisting only those that people point out as needing to be whitelisted and delay your decision to whitelist the others for possibly a week or more.
In the meantime, I'm going to take the list of blacklisted domains found in these directories and custom block these with my filter and, where any of these do "catch" messages, I'll have these automatically copied to a folder for inspection. As these build up, I'll report back (Friday or monday) stats regarding FPs and blocked spams.
Maybe others could do this same kind of test?
Rob McEwen