> spamhaus RBL with public DNS like google or openDNS will return
> all invalid checks
>
> http://www.spamhaus.org/faq/answers.lasso?section=DNSBL Usage#261
>
> So... if you are using google or openDNS for your ASSP DNS checks ,
> you may remove spamhaus RBL since it will not work .

no surprise here, probably the number of people using those "open
resolvers" went above the "limit" so the spamhaus query rate limiter
kicked in and now all the queries return a "not listed" <g> I already
wrote about the fact that, if you're serious about your setup you should
use your own DNS resolver(s) and NOT whatever external one(s)
and btw that's what I've been doing for years now all in all setting up
a caching resolver (be it BIND, unbound or whatever floats your boat)
isn't all that difficult and would avoid you a lot of headaches (not to
say that it will ALSO allow you to play some interesting "tricks")



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