Announcement Lists are ‘one-way’ where the list organizers send information to subscribers. Only the list organizers initiate an e-mail to the subscribers.
Discussion Lists are ‘two-way’ where the recipient typically replies to the entire list for discussion. Any list member can initiate an e-mail to the subscribers.
To recover a password for a discussion list, send a message from the subscribed e-mail account to <listname>-email@example.com with the subject password, where you substitute the list name for <listname>. Your password will be sent back by e-mail. Or you can use the information form below; look at the bottom of the form for the input boxes to retrieve your password.
A help page for discussion list moderators is provided, click here.