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Poco Forums • View topic - Spam Blockers

Spam Blockers

General email topics, from anti-virus and anti-spam software to webmail and ISPs

Moderators: Eric, Tomas, robin

Postby vamp07 » Sun Dec 05, 2004 7:54 am

I have no problem with spamihilator's accuracy. The plug-ins are cool but for the most part are not needed. My complaints about spamihilator have to do with its approach. I have played with spamihilator and many others far more than one hour.




ambkla wrote:
vamp07 wrote:


Did you ever look at the 25 plug-ins offered for free on Spamihilator's Web site? I have installed: Domainfilter, Countryfilter, Misspelledfilter, Spacefilter and X-Header filter. These filters need no training at all and remove 95% of all spam mails. The rest (5%) is then scanned by the Wordfilter and then by Bayesian.

If you know that an e-mail is coming in, why is the sender or domain not on your Whitelist? Whitelisted mail will never be checked. As soon as it arrives, Spami's pop-up message will let you know provided you installed the POP3notifier.

Take around one hour to set-up and configure Spamihilator and you will see what I mean.

Klaus
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Postby Alycat » Sun Dec 05, 2004 12:45 pm

Has anyone else noticed this - I switch Poco's spam filters off, but in Filters it is still listed but grayed out. The item cannot be deleted. It does not seem to run when filters are auto run, but if I manually say run on selected, Poco still seems to run its spam filters?
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Postby Alycat » Sun Dec 05, 2004 9:27 pm

Progress report on K9 - after the first "setup" batch or 60 or so, one spam missed, one false spam :D :D
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Postby vamp07 » Sun Dec 05, 2004 11:19 pm

The success you are seeing is great but in all honesty it is the same you would get with most of the Bayesian filters out there. One of the reasons that it is so frustrating that so many tools can get it right and poco so far can't.



Alycat wrote:Progress report on K9 - after the first "setup" batch or 60 or so, one spam missed, one false spam :D :D
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Postby ambkla » Mon Dec 06, 2004 6:20 am

vamp07 wrote:The success you are seeing is great but in all honesty it is the same you would get with most of the Bayesian filters out there. One of the reasons that it is so frustrating that so many tools can get it right and poco so far can't.


Bayesian filtering is just the process of statistical evaluation of words that make up good and bad mail. The statistical evaluation is based on the direct comparison of the same word as found in the "bad word" and in the "good word" database. This can be rather time-consuming and some programs use short-cuts to save processing time at the expense of incorrect results. Assigned numeric values based on occurrences are not the most effective way. Each word and combination of certain words should receive a percentage rate and the comparison of all rates divided by the number of words equals the spam rate for the mail. It is not a good practice to make rate deductions as a result of good words. In addition, words with a rate of 70, 80, 90 or 100% (cut off point must be set) should never be part of the final comparison and should always trigger the: "mail is spam" command. No matter how many good words there are, Viagra makes it a spam mail. As mentioned before, a good detection rate goes mostly along with increased processing time. Programs running in the background like: Spampal, K9, Popfile, Spamihilator have the advantage of processing mail without the user watching. Email programs show a progress meter and yes, Poco was criticized for its speed but I don't know how they evaluate mail.

Klaus
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