[TriLUG] Another seal broken... thinking of installing a C/R anti-spam system

[Dave Sorenson]

I've recently implemented Grey listing and I'm totally impressed. I'm 
dropping 300+ messages a day that don't try back after being told to try 
back in 30 seconds. The very few that do get through Spamassassin swats. 
I have my inbox back!

Dave

jonc at nc.rr.com wrote:
> Grey listing is cool, and it is the one tool I have yet to use against
> spammers... The fly-by night guys drop the spam to you via a broken
> relay. This lets the mail come to you via a legitimate IP block that has
> not yet been added to anyones Block-list. Gray listing will definitely
> work very well against a misconfigured mail server.
>
> I would love to front-end my mail services with an OpenBSD box... Thanks
> for the HeadsUp Magnus! Maybe I'll give that a try first, before putting
> in a C/R system. I'm not too hopeful though as Spammers do seem to adapt
> rapidly these days. We really need to press for smtp-auth to become the
> standard of the 21st century.
>
> Jon
>
> ----- Original Message -----
> From: Cristobal Palmer <cristobalpalmer at gmail.com>
> Date: Saturday, January 27, 2007 7:52 pm
> Subject: Re: [TriLUG] Another seal broken... thinking of installing a
> C/R anti-spam system
> To: Triangle Linux Users Group discussion list <trilug at trilug.org>
>
>   
>> It's unfortunate that "spamd" also refers to a deamonized version of
>> spamassassin. Is anybody using this OpenBSD version on Linux?
>>
>> Also, how is this harder for spammers to work around than anything
>> else? I was under the impression that many (if not most) pump-and-dump
>> spam programs ignored RFCs to the point that they didn't wait for any
>> replies whatsoever, so this OpenBSD system would have no effect on
>> those programs. Am I wrong?
>>
>> Thanks,
>> CMP
>>
>> On 1/27/07, Owen Berry <oberry at trilug.org> wrote:
>>     
>>> On Sat, 2007-01-27 at 17:03 -0500, Magnus wrote:
>>>       
>>>> OpenBSD's spamd is one of the most brilliant ideas going.  The 
>>>>         
>> best> > adaptation spammers have made to deal with it is simply to 
>> recognize it
>>     
>>>> and disconnect before the spam engine gets stuck.
>>>>         
>>> I hadn't heard of this before, so I did some reading. I thought 
>>>       
>> others> in my situation might be interested in this:
>>     
>>> http://www.benzedrine.cx/relaydb.html
>>>
>>> Informative and fairly entertaining. Take that you spammers! :-)
>>>
>>> Owen
>>>
>>> --
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>>     
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>>>
>>>       
>> -- 
>> Cristóbal M. Palmer
>> UNC-CH SILS Student -- ils.unc.edu/~cmpalmer
>> TriLUG Vice Chair
>> "There are many roads to enlightenment, and thus many roads back to
>> the One True Debian" --crimsun
>>
>>