A belated "seconded!" in re SpamBayes. I've used it for quite some time, with consistent and powerful results: I hardly ever see spam in my inbox, and it so rarely misclassifies nonspam as spam that I've stopped checking the "Junk mail" folder for possible mistakes. The only problem I've had with SpamBayes was when I started using Taskline as well. Both are Outlook plugins, and normally work fine. But my Outlook tasklist has over 400 items, so that Taskline soon fills the forms cache. Tools> Options> Other> Advanced> CustomForms> ManageForms> Clear Cache, once a week or so, fixes that. Which is important, because I probably couldn't do without either of these plugins. -eg
-----Original Message----- From: air-l-aoir.org-bounces@listserv.aoir.org [mailto:air-l-aoir.org-bounces@listserv.aoir.org] On Behalf Of Frank Schaap Sent: Tuesday, August 17, 2004 5:03 AM To: air-l@listserv.aoir.org Subject: Re: [Air-l] screening out spam
Gary Thompson wrote:
The recent spate of messages from those trying to unsubscribe reminds me that about 2/3 of everything I get via e-mail-even with an academic address-is spam. I've got my "rules" set up so as to try to catch some of this:
Since you talk about "rules" I suppose you're using Microsoft Outlook (Express).
--if the subject line contains certain keywords, e.g., "market," "drugs," "investment," "penis," "casino," then it goes into my trash box. --if the from line contains "admin," then it goes in the trash box --if the "to" says "undisclosed recipients," etc.
I'm wondering whether others have had success with similar rules, as opposed to installing spam-killing software (and as for that, how well does it work, when spammers garble key words so as to avoid screening, e.g., Vi*ag*kra or other combinations).
It helps a little... but unless your e-mail client lets you write sophisticated regular expressions into the rules (which Outlook doesn't afaik), you quickly end up with countless not terribly effective rules. I tried this too before our department admins installed server side spam filtering on the Exchange server.
One of the reasons that 'professional' spam fighters have moved beyond 'mere' rule based filtering is that because spamfilters have to be made available to the public, dedicated spammers will quickly find ways around static rules for filtering spam.
A Bayesian spamfilter is a more dynamic type of filter that goes through a learning period in which you tell it which messages are spam and which messages are ham. It classifies a number of characteristics of these messages and depending on their statistical occurrence in either category incoming messages are sorted into either the spam or the ham category.
Mozilla based e-mail clients such as the Mozilla Suite and Thunderbird <http://mozilla.org> contain bayesian filters. Personally I'm very pleased with the end result. I haven't seen a spam message up close for a long while and I haven't had any false positives after a rather short training period. The Mozilla based clients support both POP and IMAP.
But, if you just have to use Outlook to access your department's Exchange server and your department admins refuse to install spamfiltering on the server, you can run a bayesian filter in your own Outlook install (if they've given you enough permissions to install it). Have a look at Spambayes <http://spambayes.sourceforge.net/>
Eventually I guess we'll see some sort of authentication system that makes e-mail traceable. For the moment I just try to keep my personal, non-list related e-mail addresses off the web and out of newsgroups. For that kind of use I set up free throw-away accounts that I use for a couple of months untill they become useless.
HTH
Frank.
-- My Personal Portal (TM) http://fragment.nl/
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