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Pollustop Spam Filter

The INSTALL files describes most aspects of PolluStop, and explains how to
install it.

Without a license file, PolluStop will only scan the five first messages given
to it. 60-days free trial licenses are available on demand. Please send an
e-mail to info@niversoft.com to request yours.

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NOTE: THIS DOCUMENTATION IS OUTDATED. WHILE IT'S STILL VALID, IT IS INCOMPLETE.
PolluStop has a lot of new algorithms that are not described here. You should
read the configuration pages, all informations about PolluStop possibilities
are are written there.

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PolluStop runs as an external filter in Communigate Pro Messaging Server, by
Stalker Software inc.

Pollustop is first a bayesian-type spam discriminator. PolluStop doesn't reject
mails, PolluStop only tries to determine if an e-mail is a good one, or if it's
a spam, then gives its diagnostic to the user. The user - the system
administrator or the final consumer - can use this diagnostic in filtering
rules to direct the e-mail in a special "Junk mail" mailbox, or simply reject
it.

PolluStop also uses a set of rules and algorithms to provide additional
levels of filtering. It contains protection such as against <!-HTML Comments-->
attacks, so mails containing text such as

   <!a>W<!b>e<!c>l<!d>c<!e>o<!f>m<!g>e<!h> <!i>h<!j>e<!k>r<!l>e<!m>!

will be read as "Welcome here!" by the filter. HTML comments are counted, but
their contents is ignored. It also contains other protection systems, such as
one against scrambled-words emails, mails containing sentences like

   Odrer yuor Uinvrestiy Dilpoma Now!

For more information please contact Niversoft at info@niversoft.com
