You can subscribe to any open list on your own. LISTSERV will generally return an email asking you to confirm your subscription request, and will then send a notification/welcome message when you've been added to the list. If you try to subscribe to a closed list or to one that has limited subscription, LISTSERV will send a notice with further information.
Outlook
Webmail
'listname' = the list's ID; 'Your Name' = your real name.