Configuration: Red Hat Linux 7.3 Qmail-1.03 courier-imap-1.5.3 Horde-2.1 IMP-3.1 The qmail is installed under /var/qmail and I have multi domains (virtual domains) as well. I want to backup all the incoming and outgoing emails for all the users but I do not have any idea how can I do that? Do I need to re-configure the system to save all the mails? Thanks very much!