On Fri, 2013-02-22 at 12:20 -0800, Marc Perkel wrote:
> We need a rule to catch this. It looks like more data than it is but 
> it's really little more than a single link. Like to see a rule that 
> identifies it.
> 
> ---262101065-1882747875-1361559395=:62570
> Content-Type: text/plain; charset=us-ascii
> 
>  http://www.eisingen.de/kb/m6ods3ohyayq.r34xx5y7k8rn1ycnemh
> 
> Lisa Tostado, ND
> 
> 
> ---262101065-1882747875-1361559395=:62570
> Content-Type: text/html; charset=us-ascii
> 
> <html><body><div style="color:#000; background-color:#fff; font-family:times 
> new roman, new york, times, serif;font-size:14pt"><span style="font-family: 
> bookman old style,new york,times,serif;"><span style="font-size: 
> 16px;">&nbsp;</span></span><a 
> href="http://www.eisingen.de/kb/m6ods3ohyayq.r34xx5y7k8rn1ycnemh";>http://www.eisingen.de/kb/m6ods3ohyayq.r34xx5y7k8rn1ycnemh</a><br><br>Lisa
>  Tostado, ND<br><div><br></div></div></body></html>
> ---262101065-1882747875-1361559395=:62570--
> 
> 
Unless I've had a run of anomalous Yahoo spam, I think I've spotted a
rule that can catch a lot of it. Here's a my version:

# 
# Yahoo message-ID but sender not Yahoo.
#
describe MG_YAHOO_FS Yahoo message-ID but not From: yahoo
header   __MG_YAHFS1 Message-id =~ /yahoo\.com>$/ 
header   __MG_YAHFS2 From =~ /yahoo\.(com|co\.uk)/ 
meta     MG_YAHOO_FS (__MG_YAHFS1 && ! __MG_YAHFS2)
score    MG_YAHOO_FS 50


I've noticed that very much spam coming from Yahoo does not have a Yahoo
sender address. A significant proportion of my spam stream comes with
forged senders that pretend membership of mailing lists I'm subscribed
to and that are automatically whitelisted by my system: the high score
is there to counter this whitelisting.


Martin


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