Spam filters

[Aaron Holmes]

Ion-Mihai Tetcu wrote:

>On Tue, 4 Oct 2005 14:59:01 -0700
>Freddie Cash <fcash at sd73.bc.ca> wrote:
>
>  
>
>>On October 3, 2005 07:03 pm, Ion-Mihai Tetcu wrote:
>>    
>>
>>>On Tue, 4 Oct 2005 04:48:22 +0300
>>>Ion-Mihai Tetcu <itetcu at people.tecnik93.com> wrote:
>>>      
>>>
>>>>On Mon, 03 Oct 2005 23:02:36 +0200
>>>>        
>>>>
>>>>des at des.no (Dag-Erling Smørgrav) wrote:
>>>>        
>>>>
>>>>>Ion-Mihai Tetcu <itetcu at people.tecnik93.com> writes:
>>>>>          
>>>>>
>>>>>>Aaron Holmes <evil at evildomain.org> wrote:
>>>>>>            
>>>>>>
>>>>>>>Any recomendations on good spam filters?
>>>>>>>              
>>>>>>>
>>>>>>Dspam [is] more accurate that spam assassin,with less
>>>>>>resources and less work for the admin
>>>>>>            
>>>>>>
>>>>>Dspam is designed to work as a local delivery agent; all email
>>>>>addresses must map to a local user, and it delivers mail to an
>>>>>mbox file (though there are patches to make it work with
>>>>>maildir).  For more complex setups (IMAP server, virtual
>>>>>mailboxes / domains),
>>>>>          
>>>>>
>>>Just to clarify:
>>>We've deployed a solution involving all above a week ago and some
>>>months ago I've helped a 40k domains setup for a hosting company.
>>>      
>>>
>>I've just started researching dspam and am looking for ways to
>>integrate it into our mail gateway (FreeBSD 5.x box running Postfix,
>>Amavisd-new, SpamAssassing w/Pyzor and DCC, and ClamAV).  The gateway
>>receives mail for 15 domains and roughly 5000 accounts spread across
>>those domains. Handles about 250,000 messages per month, with maybe
>>35,000 of those being legit.
>>
>>I'll admit, I've only just begun reading through the docs online and 
>>just picked up the Ending Spam book authored by the coder behind
>>dspam, so I haven't touched a lot of the info that's out there.
>>
>>But, any pointers toward good documentation or example configs would
>>be greatly appreciated.
>>    
>>
>
>Tonni's www.billy.demon.nl/Postfix-amavisd-new-dspam.html comes in mind.
>
>You'll probably want to use some type of groups to reduce db load and
>learn time. You could have a postfix-dspam-clam only setup. You could
>also use the sbl joz is providing (both client and server ports are
>WIP).
>
>Drop me an email with more info about your actual setup if you want.
>
>
>  
>
How exactly does spamassassin work? I haven't been able to find very 
clear documentation on it, and I'm rather new to the anti-spam world.