In a message dated: Fri, 08 Feb 2002 10:54:46 EST
"Jerry Feldman" said:

>When you ping an IP address, you are not doing a reverse DNS, you are 
>simply accessing the ip address. No DNS is involved, simply routers.
>Reverse DNS is used by mail servers to validate that an email message comes 
>from the host it purports to be. (eg. anti-SPAM). 

IIRC, RH7.0 actually *DID* attempt a reverse-dns look up when 
ping'ing an IP address.

Note, this was a bug, and not the expected/desirable behavior.


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