Internet Express for Tru64 UNIX Version 6.8 Administration Guide (14233)

3. Set up the MTA to invoke bogofilter on each message. While this is an MTA specific step,
you'll probably need to use the -p, -u, and -e options.
4. Set up a mechanism for users to register spam/non-spam messages, as well as to correct
misclassifications. The most generic solution is to set up alias email addresses to which users
bounce messages.
For sendmail integration, follow the procmail example from Section 5.4.3.1: Using Bogofilter
with procmail.
5.4 Bogofilter Spam Filter 133