I'm running 6.0.8 (open source) and have deleted a large number of accounts over the past few weeks. In looking at disk usage, I have discovered that a number of deleted accounts still have messages in the message store (/opt/zimbra/store).

Is there an automated process that exists to clean these out?

If not, can I just build a list of valid mailbox IDs and delete everything from /opt/zimbra/store/0 that is not a valid/current mailbox ID?