On Wednesday, December 8, 2004, 8:33:11 AM, Bill Landry wrote:
Actually, I was thinking of the whitelist that Jeff has already compiled at http://spamcheck.freeapp.net/whitelist-domains.sort (currently over 66,500 whitelisted domains). If you set a long TTL on the query responses, it would certainly cut down on follow-up queries for anyone that is running a caching dns. It would also be a lot less resource intensive then trying to run a local whitelist.cf of over 66,500 whitelisted domains.
That list includes a large majority (52 thousand) of geographic domain names, mostly .us ones which will probably never be used in spams. We included them just for completeness and since large sorted lists have almost no performance impact on UNIX joins.
The actual number of non .us whitelisted domains is about 13 thousand.
We mentioned some reasons why these are not as well-suited to DNS lists as the blacklist records are.
Jeff C.