SpamAssassin is not a filter

[Kenneth Porter]

From <http://wiki.apache.org/spamassassin/>:

SpamAssassin is a mature, widely-deployed open source project that serves
as a mail filter to identify Spam. SpamAssassin uses a variety of
mechanisms including header and text analysis, Bayesian filtering, DNS
blocklists, and collaborative filtering databases. SpamAssassin runs on a
server, and filters spam before it reaches your mailbox.

One of the frequent complaints from end users is that SA blocked some mail. 
And the standard answer is that SA doesn't block mail; some *other* program 
uses the results of SA's analysis to filter mail.

So I suggest changing the wording of that paragraph to replace "filter" 
with "classifier":

SpamAssassin is a mature, widely-deployed open source project that serves
as a mail classifier to identify Spam. SpamAssassin uses a variety of
mechanisms including header and text analysis, Bayesian filtering, DNS
blocklists, and collaborative filtering databases. SpamAssassin runs on a
server, allowing other programs to filter spam before it reaches your
mailbox.

I suspect the term "filter" was used because SA is indeed a "filter" in the 
unix sense of a program that runs in a pipeline that transforms its input. 
But that's a technical detail that doesn't really describe what SA *does*.