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Posted by TransLab (Member # 470) on :
 
Here's a good read..

filtering spam

Here's the reader digest condensed version.

All email today gets relayed through a number of servers befor it gets to its destination. The servers have software called SpamAssassin which is an open-source software package which applies a variety of textual and other tests to messages in order to estimate the likelihood that they are spam. This likelihood is represented as a number, the spam score. It adds headers to a scanned message containing indications of the spam score assigned to it, and the mail system then continues processing the message as normal.

If you take a typical piece of spam and examine the header you will find something like this at the bottom of the header:

X-Spam-Status: No, hits=12.4 required=100.0
tests=CLICK_BELOW,CLICK_BELOW_CAPS,CLICK_HERE_CAPS_LINK, CLICK_HERE_LINK,CLICK_TO_REMOVE_2,DATE_IN_FUTURE_03_06, FREE_QUOTE,FROM_HAS_MIXED_NUMS,MAILTO_LINK, MIME_HTML_NO_CHARSET,MISSING_MIMEOLE,RCVD_IN_DSBL,
RCVD_IN_OSIRUSOFT_COM,SAVE_MONEY,SAVE_THOUSANDS,
SPAM_PHRASE_13_21,USER_AGENT_OE
version=2.43
X-Spam-Level: ************


Directions for using this spam score to divert spam into a seperate folder are included in the url above, it works with Outlook 2000, Outlook 2002, netscape 4 and netscape 7 for windows, but not outlook express which lacks the ability to read mail headers.
I've found that setting my filter at (5) ***** works well.

This is not a spam killer, but is a good spam management tool, it gets better than 95% of the spam out of my inbox.
I only spend a couple of seconds looking through the headers in the spam folder before I trash them.

[ June 09, 2003, 08:25 AM: Message edited by: TransLab ]
 
Posted by Bruce Williams (Member # 691) on :
 
Sounds pretty good. I'd like to read what they say about it in alt.spam and similar newsgroups. I gather that spam now accounts for closer and closer to half all business e-mail in the US. If this continues, then e-mail won't work.

I still recommend that we first use all the anti-spam tools given to us free, like SpamCop and Sam Spade, and report this ****. Most people don't do this, I'm told, and if that's so, then what could they possibly expect to do next?
 


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