O'Reilly Network: Filtering Spam with ProcmailJan 15, 2002, 11:23 (2 Talkback[s])
(Other stories by Dru Lavigne)
"In the last article, we installed the procmail utility and generated a few basic recipes. This week, let's start by looking at procmail's built-in logging mechanism. We'll then take a look at some other available resources that build on procmail's capabilities."
Complete Story [ Oriented around FreeBSD, easily applicable to Linux systems -ed. ]