Directory structure under /var/spool/imap ========================================= stage./ Normal staging directory sync./ Staging directory for replication system Includes sync./locks/* which are lock files for each user on the system to prevent two replication runs from trying to update the same account at the same time (nothing disasterous should happen even without this lock, but the second job in will get a bit confused if the target end changes under its feet, and will probably drop back to a recovery mode. user/ Familiar user.userid space. Directory structure under /var/imap =================================== Complete list: drwxr-xr-x 2 cyrus cyrus 232 Sep 7 08:21 db drwxr-x--- 2 cyrus cyrus 112 Sep 7 19:51 db.backup1 drwxr-x--- 2 cyrus cyrus 112 Sep 7 19:21 db.backup2 -rw-r----- 1 cyrus cyrus 20799488 Sep 7 19:51 deliver.db drwxr-xr-x 2 cyrus cyrus 48 Sep 7 10:16 log -rw-r----- 1 cyrus cyrus 1995000 Sep 7 19:38 mailboxes.db -rw-r--r-- 1 cyrus cyrus 10 Jun 2 10:08 master_machine -rw-r--r-- 1 cyrus cyrus 71 Sep 7 08:21 master_uuid drwxr-xr-x 2 cyrus cyrus 48 Jun 2 10:08 msg drwxr-xr-x 2 cyrus cyrus 1872 Sep 7 19:55 proc drwxr-xr-x 28 cyrus cyrus 672 Jun 2 10:08 quota drwxr-xr-x 2 cyrus cyrus 224 Sep 7 08:21 socket drwxr-xr-x 2 cyrus cyrus 72 Sep 7 10:19 sync drwxr-xr-x 28 cyrus cyrus 672 Jun 2 10:08 user Most of that will be familiar. New entries are: master_machine Defines machine number in replication cluster. Used as sanity check aginst master_uuid file. Sample content: machine=1 master_uuid Full information about UUID schema in use. See ./uuid for details. Sample content: schema=1 machine=1 timestamp_generation=0 master_start_time=1062919294 sync/current Transaction log from IMAP, POP and LMTP daemons, typically feed into sync_client running as asynchronous replication engine. Rotated to be sync/current- by asychronous runner.