with the new quotas, there's nothing to prevent a user from generating multiple accounts using assorted free email accounts. may i suggest the ability to have default quotas by mail domain? i would like to give gmail/yahoo or *.com users tiny quotas, larger quotas for *.edu, *.gov users, and largest quotas for users with our own mail domains e.g. @lbl.gov. alternatively i'd like to limit user registration by mail domain (disallow gmail, etc.). comments?