This is just a quick note on listserves. A listserve is a computer program that takes incoming mail and forwards it to a list of recipients. The cor list is a listserve. When you send mail to firstname.lastname@example.org a computer program called mailman sends the message out to everyone on the list.
You have the ability to interact with the listserve by sending e-mail to a special administrative address for the list. To get the administrative address for the list just take the list name and follow it with -request. For example the administrative address for the cor list is email@example.com. If you want to do administrative stuff like subscribe to the list or unsubscribe or see who is on it you would send your commands to that address, ampoule firstname.lastname@example.org.