RECONSTRUCT(8)              System Manager's Manual             RECONSTRUCT(8)

       reconstruct - reconstruct mailboxes

       reconstruct [ -C config-file ] [ -p partition ] [ -x ] [ -r ] [ -f ]
       reconstruct [ -C config-file ] -m

       Reconstruct rebuilds one or more IMAP mailboxes.  When invoked with the
       -m switch, it rebuilds the master mailboxes file.  It can be used to
       recover from almost any sort of data corruption.

       If Reconstruct can find existing header and index files, it attempts to
       preserve any data in them that is not derivable from the message files
       themselves.  The state reconstruct attempts to preserve includes the
       flag names, flag state, and internaldate.  Reconstruct derives all
       other information from the message files.

       Reconstruct reads its configuration options out of the imapd.conf(5)
       file unless specified otherwise by -C.  Any mailbox directory
       underneath the path specified in the partition-news configuration
       option is assumed to be in news format.

       Reconstruct does not adjust the quota usage recorded in any quota root
       files.  After running reconstruct, it is advisable to run quota(8) with
       the -f switch in order to fix the quota root files.

       -C config-file
              Read configuration options from config-file.

       -p partition
              Search for the listed (non-existant) mailboxes on the indicated
              partition.  Create the mailboxes in the database in addition to
              reconstructing them.  (not compatible with the use of wildcards)

       -x     When processing a mailbox which is not in the mailbox list (e.g.
              via the -p or -f options), do not import the metadata from the
              mailbox, instead create it anew (this specifically affects at
              least the mailbox's seen state unique identifier, user flags,
              and ACL).

       -r     Recursively reconstruct all sub-mailboxes of the mailboxes or
              mailbox prefixes given as arguments.

       -f     Examine the filesystem underneath mailbox, adding all
              directories with a cyrus.header found there as new mailboxes.
              Useful for restoring mailboxes from backups.

              Rebuild the mailboxes file.  Use whatever data in the existing
              mailboxes file it can scavenge, then scans all partitions listed
              in the imapd.conf(5) file for additional mailboxes.

       You want to reconstruct the index files for a user, you have recovered
       a deleted mail file from backup and given it a suitable name (eg
       user/ben-lacy/33.), but it is not visible since it is not indexed:

       reconstruct -r user.ben-lacy

       If you have the unixhierarchysep:yes option set in /etc/imapd.conf you
       would need to run:

       reconstruct -r user/ben.lacy


CMU                              Project Cyrus                  RECONSTRUCT(8)