I thought Validity was making the free FBL more like Google's Postmaster Tools FBL. Which, I've never gotten one iota of anything relevant in Google's FBL system.
If I had to venture a guess, I'd say that this is going to be the future of FBLs. I think providers want to be able to block certain mail servers without having to show evidence of abuse and having an FBL system doesn't really lend themselves to this. This mailing list itself is flooded with requests of "Anybody from XXX able to tell me why IP is blocked?" that is basically a tell-tale sign that the provider is either blocking the mail server because they want to or not providing enough tools for the sending operator to investigate the issue on their own. The idea of FBL is great. The application of FBL is well below ideal. If end-users would utilize FBLs as the intended function, to identify spam - not just mailing list you no longer want to receive. And if FBL operators would send all of these complaints back to the sending server administrator. And if the sending server administrator would act upon them properly, then FBLs are a great tool. But too often we're seeing end users abuse the functionality of reporting spam. FBL operators aren't sending every complaint and instead are requiring a certain threshold to be met and blocking the mail server before reaching this threshold. And server administrators are either ignoring the complaints sent back to them, not signing up for them in the first place, or are spammers themselves utilizing the reports with bad intentions.
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