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If you run
Evolution on Linux, we can help you stop spam.
How it Works
Challenge/response
e-mail filters only pass e-mail through if the sender is on a
"whitelist". E-mail from anyone not on the whitelist
goes to
a holding area. The sender is then challenged to prove he's a
real person, rather than a spam bot. If the sender succeeds
in
answering the challenge, he is permanently added to the whitelist, and
his original and all further e-mail is delivered without delay.
Evochallenge
is a simple free challenge-response program that
integrates into your
Evolution e-mail client through e-mail filters.
Why EvoChallenge?
There
are several challenge-response filter systems available. Some are
e-mail client independent. However, if you run Evolution, other
challenge-response e-mail filters tend to sweep away your
non-whitelisted e-mail before you ever have a chance to review it.
With Evolution, all non-whitelisted e-mail goes into your Holding
folder, which you can scan through at your convenience. Further,
EvoChallenge adds features such as automatic white-listing of anyone
you send e-mail to. Also, your whitelist is a simple text file in
your home directory, which is simple to edit and maintain.
Installation
Download the latest release at SourceForge. Un-tar and un-gzip the tar.gz file. Go into the evochallenge directory and execute:
./install.pl
Then,
edit your ~/.whitelist file and set your SMTP server options to be the
same as what you use in Evolution. It's
as simple as that! If you have any trouble, please e-mail
bill@billrocks.org right away. More help can be found on the
following pages.
In particular, check out Whitelist Editing for instructions on
importing your contacts into your whitelist.
Credits
Others
have written challenge/response e-mail filters similar to Evochallenge.
SFAIK, this is the only one that works as a filter in Evolution on
Linux. Thanks goes to D. Sleator, since I was able to learn much from
his "Blowback" perl scripts while implementing Evochallenge.
Thanks also goes to Michal Ludvig for writing his awesome
smtp-client.pl script (which I release as evo-smtp-client.pl).
Finally, thanks goes to Ray Jones for helping debug all this!
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