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Re: db.debian.org (and related infrastructure) updates

On Mon, 1 Jan 2007, Josselin Mouette wrote:

> Thanks for the explanations. Unfortunately that doesn't make these
> measures really useful, as rejecting email blindly based on data as
> reliable as RBLs is likely to give tons of false positives.

I prefer to call them DNSBLs, as RBL is a proper name (of MAPS RBL).

For those of you who are afraid about reliability of a DNSBL,
I can highly recommend cbl.abuseat.org as the absolute minimum.
This list (called CBL for short) has the following properties:

* Takes its data from very large spamtraps.
* Only lists IPs which are open-proxy-like.
* Only lists individual IPs, never lists "IP ranges".
* It's completely automated to prevent human error.
* Tries very hard not to list "real" SMTP servers.
* Everybody can remove any IP from the list without any questions at all.

and last, but not least important:

* You can avoid approximately 50% of all the spam just by using this list.

So I would call the CBL a very useful list.

BTW: I'd like to thank Ryan for the db.debian.org stuff and share my happiness
with everybody here: I enabled zen.spamhaus.org and greylisting on 2006-12-31.
Now I receive just three spams a day instead of 150 spams a day. Hurrah!

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