On 9.7.2013, at 20.37, Metro Domain Admin <metro_domain_admin@fastmail.fm> wrote:
One of my users just mysteriously lost all files from his inbox. I have "mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename" but couldn't find any evidence of accidental file or folder deletion. I logged in to find that ~user/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index and its backup were tiny, only 552 bytes, when the folder had thousands of messages. Other folders were left intact. We are running 2.1.15 (mdbox) on Ubuntu 12.10 using ext4. The system was rebooted about 10 days before and the full INBOX was definitely seen since the reboot. I'm just looking for ideas about what might have happened.
Can you find any error or warning messages in the log for this user? Like "rebuilding indexes" warning?
Are the messages still in the mdbox/storage/m.* files?