The mailing list package we use is Mailman.
This CS Guide page does not attempt to duplicate the Mailman documentation or the primary FAQ page. Rather, it is a local guide designed to address frequently (or infrequently) asked questions regarding mailing list administration and configuration.
If want to restrict a membership in a mailing list to, say, email addresses in the princeton.edu domain (including ee.princeton.edu and cs.princeton.edu), enter the following regular expression in the mailing list's ban_list field (on the Privacy options page):
If you want to strictly limit to just cs.princeton.edu, use this regular expression: