The procmail mailing list: To subscribe to the procmail mailing list, send a letter to procmail-request@informatik.rwth-aachen.de. Letters to the list should be sent to procmail@informatik.rwth-aachen.de
Procmail Mini-Tutorial in Linux Gazette: In Linux Gazette Issue 14 is a mini-HOWTO on procmail, Procmail Mini-Tutorial: Automated Mail Handling by Jim Dennis.
Procmail Mini-FAQ: Era Eriksson has created an excellent FAQ for procmail, which is worth visiting before you ask anything on the mailing list.
The home page of the Dotfile Generator: At the home page of The Dotfile Generator, you can find additional information about the other modules, which TDG contains (at the moment these include: Bash, Elm, Emacs and ipfwadm). The address is http://www.imada.uo.dk/~blackie/dotfile/.