Mature artists steal.
These additional mail servers include Listproc, Mailbase, Mailserv, and Majordomo. This document does not describe all the features supported by any of these programs, only those most commonly used. Additional programs and commands will be added in future revisions of this document. Because of the variety of methods of maintaining these lists, it is impossible to generalize about their command features. If a program responds with instructions for subscribing, follow the instructions.