search for: responsebil

Hi, we run a dovecot mail-server with about 50GB of e-mail and at the moment users are responsebil for macking ther own backup of e-mails. But I'd like to have also a backup of the mail, beckause not all users do ther backups ... We use mbox-format-mailboxes. Any ideas how to backup the mailboxes without stopping the server, doing a backup to disk/tape/...? Thanks for any ideas ant tip...