This is the "delayed expunge" feature, added in 2.3. man imapd.conf,
page down to expunge_mode. It's a speed enhancement and has the side
effect of allowing sysadmin undelete/unexpunge without recourse to backups.
You should have something like this in cyrus.conf for garbage
collection. man cy
after deleting a whole bunch of messages from my INBOX (and
expunging/purging trash), when i inspect
the /var/spool/imap/b/user/bryan directory i notice that the messages
are still there. they are also still in the trash folder as well. they
are no longer displayed in the client (squirrelmail or
