We are going to be enforcing mailbox limits for all of our mailboxes in the next month. We are a non-profit social services organization with 600+ email accounts. We already have in place rules to delete deleted items older that one month and sent items older than 90 days. We are going to be setting a 100 meg limit on inbox, warning at 75 meg and stopping send at 100 meg. We really don't use email to send large files like spreadsheets or pdf's or anything like that. We have an intranet set up for stuff like that. a few of the users are over the limit now. We helped them clean up their mailbox to within limits and within a day, they were back over the limit. What are you admins doing for archiving so the users will have access to older stuff if they need it?