Performance Issues - PTR Records

[bzs at world.std.com (Barry Shein)]

 > As a web host, we frequently find customers who have
 > added Apache rules to their ecommerce sites to block
 > undesirable traffic, such as credit card scammers, etc.
 > Not knowing any better, they often do this by just
 > blocking anything that ends in .in to block Indonesia
 > for example.  Well, once you choose to block by 
 > resolved name, now that site has to do a dns lookup
 > for every incoming request to see if it resolves to a
 > name that should be blocked.

Another practical problem with this approach is that .IN is India but
hey, at least it blocks something :-)

-- 
        -Barry Shein, that'd be .ID for Indonesia

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