mx2.freebsd.org in dnsbl.sorbs.net

[Miguel Mendez]

On Wed, 02 Feb 2005 16:37:40 +0100
Erik Norgaard <norgaard at locolomo.org> wrote:

Hi Erik,
 
> I have been thrown off the list because of too many bounces, turns out
> 
> that mx2.freebsd.org has been listed at dnslb.sorbs.net,
> 
> $ host 119.204.136.216.dnsbl.sorbs.net
> 119.204.136.216.dnsbl.sorbs.net has address 127.0.0.6
> 
> How on earth did it end up there? are someone mad at us? mx1 is not 
> listed, but it appears that most list mail comes from mx2...
> 
> I have had other problems trying to filter spam, yet recieve
> legitimate  mail on the lists - I'm using postfix. How do you set up
> your filters?

Have you contacted postmaster at freebsd.org? He should get in contact with
SORBS and get the host delisted. My theory about how mx2 ended up there:
Maybe somebody has an automated spam submitting system and SORBS parsed
the addresses of one of the few spam messages that get through the list
or either someone intentionally submitted a forged e-mail there.

Either way, SORBS is a total joke and nobody should ever use them. They
unilaterally blacklisted my /16 and there's zero change I'll ever get
delisted until I pay the $50 "extortion fee". Apparently the facts that
I've had the same IP for 5 years and that I publish SPF records don't
matter.

I laugh at the "Fighting spam by finding and listing Exploitable
Servers." title in their web page. Google for 'sorbs sucks', nice reads
:-)

If you want to filter spam you can use spamassassin (disablig the sorbs
and spews tests) and greylisting which works very well. SPF checks also
catch a few forged e-mails on my server (probably virus-generated but
spam nonetheless.)

Cheers,
-- 
Miguel Mendez <flynn at energyhq.es.eu.org>
http://www.energyhq.es.eu.org
PGP Key: 0xDC8514F1

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