John R. Levine <jo...@iecc.com> wrote: > > DNSBLs already set the min pretty low, e.g. 150 sec for Spamhaus. Doesn't > really matter how low it is if you have so many entries that they force out > the useful ones.
The really important records are the delegation chain NS records. It is not so necessary to keep leaf records in the cache. http://nms.csail.mit.edu/projects/dns/ > Modern spam filters don't usually look up the author domain, since it's > usually a genuine address taken from the spam list so it's unrelated to the > real sender. I think it's still useful to reject mail with an unresolvable return path domain. Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ Lundy, Fastnet: Southwest 4 or 5, increasing 6 or 7 later. Moderate or rough, occasionally very rough later in Fastnet. Showers. Good. _______________________________________________ Ietf mailing list Ietf@ietf.org https://www.ietf.org/mailman/listinfo/ietf
