From: Victor Duchovni (Victor.Duchovnimorganstanley.com)
Date: Fri May 02 2008 - 09:03:44 CDT

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On Fri, May 02, 2008 at 10:48:58AM -0300, Arturo 'Buanzo' Busleiman wrote:

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> Hi! Any recommendations for RBLs, apart from zen.spamhaus.org (the ONLY one
> I use)?

After filtering with Zen, there is not much additional value you get from
more IP RBLs (without signficant FP risk). For example, list.dsbl.org is
quite safe, but only adds ~1-2% after Zen.

Some people report good results with bl.spamcop.net, which reputedly has
become safer to use for rejects (not just scoring), but it not really
intended for this use last I checked.

Beyond Zen, your efforts are probably best directed at message content
filtering say SpamAssassin with SURBL lookups to filter spam URLs, ...

--
        Viktor.

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