The proliferation of unsolicited email, or spam, is becoming more and
more widespread. However, there are many tools to help prevent spam.
This week, we look at using Procmail and SpamAssassin to filter
incoming mail and to block incoming spam. Procmail
is a mail filter than can be used to sort incoming mail into separate
folders as well as many other types of mail preprocessing. SpamAssassin is a mail filter that uses heuristic scanning to identify spam.
Since both Procmail and SpamAssassin are in Portage, installation is a simple emerge.
Most Gentoo users are familiar with the Portage system used to install software. One of the features that you may not be familiar with is that Portage can also update your entire system at once. This is known as an 'update world'.
To run an update world, use the following command: