The general flow of tasks for subscribing a new user is like this:
- Subscriber sends e-mail to majordomo "subscribe list newmem@address"
- Majordomo sends request to Admin for approval
- Admin returns "approved" request to majordomo (or forgets it to kill the request)
- Majordomo sends response to Admin "request received OK"
- Majordomo sends response to Admin "newmem@addr" added to list
- Majordomo sends 'intro' file to newmem@addr