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Re: [Asrg] 7. Best Practices - DNSBLs - Article
At 1:09 PM -0400 2003/09/08, Chris Lewis wrote:
H'm, t'would be amusing to try this out with a much-hacked DNS server
doing the "sharing". Create a query like
"sender.ip.recipient.greylistzone", and let the DNS server do the
counting.
Interesting indeed. Specifically with regards to the sample
greylist implementation that is shipped in the latest snapshots of
postfix, I was thinking about using a shared central MySQL database
tied to a perl hash, or maybe a local proxy to a central program
backed with a Berkeley db database tied to a perl hash.
On a more general level, I was also thinking about how you could
implement something like this with a dynamic update to a DNS zone.
I'm not the sender, only the recipient. So, I couldn't be in
violation of such a rule.
Anyone who retransmits within the thirty minute timeframe, for
any reason, gets lambasted.
This is something I mean to try on our huge spamtrap. If only as a
pure-research project...
I look forward to hearing your results.
--
Brad Knowles, <brad.knowles@skynet.be>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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