On Tue, Jan 06, 2009 at 02:07:38PM -0600, Craig wrote:
> Hello All-
>  
> I have recently been getting MANY spam slipping through Spamassassin and I am 
> looking for help on how to stop.  I have used Spamassassin with Bayes 
> successfully for many years now and once I train the system on new spam, the 
> system does an excellent job of stopping. These messages are very short and 
> include a link.  The subject is usually regarding watches, or are thinly 
> disguised viagra ads. Many are sent from aim.com Below is header info and 
> below that is the Spamassassin output of an email that has slipped through.  
>  
> Specs:
> SA 3.17
> With Bayes integration, DNS testing.
>  
> Thanks
> Craig
>  
> To: gillian.gr...@btinternet.com 
> Subject: Private Message.
> Date: Tue, 06 Jan 2009 14:36:43 -0500
> X-AOL-IP: 81.37.21.218
> X-MB-Message-Source: WebUI
> MIME-Version: 1.0
> From: omqdwc63...@aim.com 
> X-MB-Message-Type: User
> Content-Type: multipart/alternative; 
>  boundary="--------MB_8CB3E4D3D238A60_FE4_95E_Webmail-mg02.sim.aol.com"
> X-Mailer: AIM WebMail 40627-STANDARD
> Received: from 81.37.21.218 by Webmail-mg02.sim.aol.com (64.12.142.150) with 
> HTTP (WebMailUI); Tue, 06 Jan 2009 14:36:43 -0500
> Message-Id: <8cb3e4d3d212802-fe4-...@webmail-mg02.sim.aol.com>
> X-Spam-Flag:YES
>  
> 
> ----------MB_8CB3E4D3D238A60_FE4_95E_Webmail-mg02.sim.aol.com
> Content-Transfer-Encoding: 7bit
> Content-Type: text/plain; charset="us-ascii"
>  
> Don't fail in the bed games. Try THIS.
>  
> 50 percent add present
>  
> &gt;&gt;&gt;?http://www.ecbdollar.com/sp.php?&lt;&lt;&lt;
>  
>  
> _______________________________________________________________________________________
>  
>  
> Spam detection software, running on the system "spam_server.unitedwayqc.lcl", 
> has
> identified this incoming email as possible spam.  The original message
> has been attached to this so you can view it (if it isn't spam) or label
> similar future email.  If you have any questions, see
> ccanfi...@unitedwayqc.org for details.
>  
> Content preview:  Breakthrough formula for men 50 percent add present
>   &gt;&gt;&gt;?http://www.canada-cz.com/sp.php?&lt;&lt;&lt; [...] 
>  
> Content analysis details:   (3.3 points, 5.0 required)
>  
>  pts rule name              description
> ---- ---------------------- --------------------------------------------------
>  1.0 NO_REAL_NAME           From: does not include a real name
>  2.2 FROM_HAS_MIXED_NUMS    From: contains numbers mixed in with letters
>  0.0 UNPARSEABLE_RELAY      Informational: message has unparseable relay lines
>  0.1 HTML_50_60             BODY: Message is 50% to 60% HTML
>  0.0 HTML_MESSAGE           BODY: HTML included in message
>  0.0 BAYES_50               BODY: Bayesian spam probability is 40 to 60%
>                             [score: 0.5000]

Directly from our local.cf:
========= 8< snip -----------------
# We've (or at least the webmaster has) had a problem with spam
# from aim.com users, coming from AOL servers.  After much training,
# they hit BAYES_99, but not enough other rules to go over the edge.
# These are designed to handle that.
header __RLM_RCVD_FROM_AOL Received =~ /from .*\.aol\.com/
header __RLM_FROM_AIM_USER From =~ /\...@aim\.com/
meta RLM_AIM_SPAM (__RLM_RCVD_FROM_AOL && __RLM_FROM_AIM_USER)
# Most of this already scores 3.5.
score RLM_AIM_SPAM 1.6
========= 8< snip -----------------

Set your score to push them over the threshold.  Much more than that
and you risk FPs.

Cheers,
-- 
Bob McClure, Jr.             Bobcat Open Systems, Inc.
b...@bobcatos.com             http://www.bobcatos.com
My son, do not despise the LORD's discipline and do not resent his
rebuke, because the LORD disciplines those he loves, as a father the
son he delights in.  Proverbs 3:11-12 (NIV)

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