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Message from discussion FEATURE(`anfi/rsdnsbl') - selecting DNSBL checks based on reputation/country
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Scott Grayban  
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 More options Sep 2 2007, 7:58 pm
Newsgroups: comp.mail.sendmail
From: Scott Grayban <sgray...@NOSPAM-gmail.com>
Date: Sun, 02 Sep 2007 16:58:48 -0700
Local: Sun, Sep 2 2007 7:58 pm
Subject: Re: FEATURE(`anfi/rsdnsbl') - selecting DNSBL checks based on reputation/country
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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.

> The FEATURE itself does not block anything - it only decides if the
> remaining/further DNSBL tests [FEATURE(enhdnsbl) tests] should be
> skipped or conducted.

> Sample1 - user in Poland:
> #v+
> dnl import IP addresses used to represent countries in
> dnl zz.countries.nerd.dk in form C2_*
> FEATURE(`anfi/countries')dnl

> dnl first batch of enhdnsbl tests

> dnl skip remaning test for PL, DE, UK and FR adresses
> FEATURE(`anfi/rsdnsbl',`zz.countries.nerd.dk',`whitelist',`',
>   C2_PL, C2_DE, C2_UK, C2_FR)dnl

> dnl second batch of enhdnsbl tests

> dnl do remaning test only for CN and KR, do not test on TMP problems
> FEATURE(`anfi/rsdnsbl',`zz.countries.nerd.dk',`blacklist',`t',
>   C2_CN, C2_KR)dnl

> dnl third batch of enhdnsbl tests

> #v-

> Sample2 - user in Finland:
> #v+
> dnl import IP addresses used to represent countries in
> dnl zz.countries.nerd.dk in form C2_*
> FEATURE(`anfi/countries')dnl

> dnl first batch of enhdnsbl tests

> dnl skip remaning test for FI addresses
> FEATURE(`anfi/rsdnsbl',`zz.countries.nerd.dk',`whitelist',`', C2_FI)dnl

> dnl second batch of enhdnsbl tests

> dnl do remaning test only for addresses listed in APEWS, do not test on TMP problems
> FEATURE(`anfi/rsdnsbl',`l2.apews.org',`blacklist',`t')dnl

> dnl third batch of enhdnsbl tests

> #v

> URL(s):
> * cf/feature/anfi/rsdnsbl.m4 file:
> http://open-sendmail.cvs.sourceforge.net/*checkout*/open-sendmail/ope...
> * cf/feature/anfi/countries.m4 file:
> http://open-sendmail.cvs.sourceforge.net/*checkout*/open-sendmail/ope...

> P.S. Feel free to comment.


 
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