>Beware: there is also massive collateral damage in the other lists rolled 
>into the top-level zone.

No, there isn't.

>Despite the name, the 'relays' zone is far more than just relays ...

FYI, "relays" is a standard zone name to use for ip4r/dnsbl lookups.

>... and Joe has recently added the 'Openlists' list to it, causing *huge* 
>collateral damage. If you use that zone, it is ESSENTIAL that you use a 
>current SIMS which can differentiate between return values and choose your 
>blocking that way. Joe could well add other new lists into the zone 
>without notice and if you have 127.* in your blacklist you would 
>automatically use those.

As you point out, the relays.osirusoft.com zone contains 7 different 
anti-spam databases.  Yes, if you use all 7, you will get lots of false 
positives.  But there is no need to run all 7 tests, unless you want to (or 
have to).  Spam control is delicate stuff, and you shouldn't go into it 
blindly; you should know which test(s) you are running and what they involve.
                                                       -Scott


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