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in.dnsbl.org must not be used for mail filtering
- From: Mark Jeftovic
- Date: Mon May 29 11:57:53 2006
in.dnsbl.org was created several years ago for commercial DNS providers
to share information about problem domains and to offer a mechanism to
prevent abusers from hopping from DNS provider to provider.
Under no circumstances should it be used by any MTA for mail filtering
in any capacity whatsoever. Absolutely no vetting goes into in.dnsbl.org
listing and domains can get listed for internal reasons which are purely
meaningless in an email context.
Over the years some big name domains have wound up in the in.dnsbl.org
zone for reasons which have absolutely nothing to do with email and
simply for inter-provider communications between the DNSBL.org members.
In short, using in.dnsbl.org on any MTA is an act of mind-numbing
recklessness. Don't do it.
Thank you for your time.
Mark Jeftovic <firstname.lastname@example.org>
Founder & President, easyDNS Technologies Inc.
ph. +1-(416)-535-8672 ext 225
fx. +1-(866) 273-2892