I need to implement a solution which will archive all incoming and outgoing e-mails, and move the e-mails to a dvd periodically. I was hoping Zimbra's archiving and discovery would be able to accomplish this, but I don't see anything for moving old, archived emails to dvd. When messages are archived, does it physically store the message twice, once in the archive and once in the user's inbox, or does it save disk space by referencing the same data twice? Do I need to modify amavisArchiveQuarantineTo and zimbraArchiveAccount manually every time I create a new account?
Right now, I'm thinking of using the always_bcc option in postfix, then writing a script which backs up and deletes old messages from the archive account. Is the cross mailbox search plugin part of the "archiving and discovery" addon which costs $24 per mailbox? If I only use it to search the archive account, would I pay based on the accounts on the server, only the account I would search, or none since I wouldn't have archiving enabled on any accounts?