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Message from discussion FEATURE(`anfi/rsdnsbl') - selecting DNSBL checks based on reputation/country
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Andrzej Filip  
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 More options Sep 3 2007, 5:26 am
Newsgroups: comp.mail.sendmail
From: Andrzej Filip <a...@onet.eu>
Date: Mon, 03 Sep 2007 02:26:21 -0700
Local: Mon, Sep 3 2007 5:26 am
Subject: Re: FEATURE(`anfi/rsdnsbl') - selecting DNSBL checks based on reputation/country
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Scott Grayban <sgray...@NOSPAM-gmail.com> wrote:
> Andrzej Adam Filip wrote:
> > [1: Followup-To set to news:comp.mail.sendmail ]
> > [2: The code presented should be considered to be ALPHA quality ]

> > I would like to present FEATURE(`anfi/rsdnsbl.m4') that is supposed to
> > fine tune set of DNSBL checks based on originating IP address
> > * reputation (using e.g. l2.apews.org )
> > * country    (using e.g. zz.countries.nerd.dk )

> I would never use apews.org -- they list large blocks and is very unreliable
> as a dnsbl. They don't even offer a way to get delisted or even contact them.
> They also provide no source of the spam. They just give ambiguous information.

> Anyone that uses them for any reason will most likely end up being blocked
> themselves.

Can you read and *understand*? [ I doubt ]

The presented FEATURE should allow for example:
* restricting rdns checks (enforcing closed PTR-A loop) only for nets
listed in APEWS
* use more aggressive DNSBL/DUL lists only for nets listed in APEWS

E.g.I see no good reason to block DUL connections also from every very
high standards ISP merely because low standards ISPes have made DUL
ranges such a nuisance.

P.S.
I do not recommend use of l2.APEWS.org for plain binary blocking
(accept/reject) on any server significantly bigger than a "family
server" *BUT* it does not make APEWS totally useless.  l2.APEWS.org
list ~50% of assigned/allocated IP address space, so it can be used to
make life harder for the worse half of the Internet ;-)


 
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