Strange postfix log ?

[Truppe Steven]

> On Wednesday 10 August 2005 13:20, Truppe Steven wrote:
> > when i try to do a ctl_mboxlist -d as the kolab-r user, i get the error:
> > fatal error: can't read mailboxes file
> >
> > is there a way to regenerate them from the emails ?
>
> No. You either need a working backup of the file mailboxes.db or you can
> re-create the list manually and feed it into ctl_mboxlist -u.
>
> But before you do that, you should check your imapd log files because only
> those contain (more or less) meaningful error messages related to the IMAP
> subsystem.

I've looked into to logs but there is only this:

skiplist: invalid magic header: /kolab/var/imapd/mailboxes.db
imap[19452]: DBERROR: opening /kolab/var/imapd/mailboxes.db: cyrusdb error
imap[19452]: Fatal error: can't read mailboxes file
imap[19454]: executed

for a few thousand lines ...

is there a way to restore the mailboxes.db by hand ? i've done a ctl_mboxlist 
-d > filename.txt, then added the folders that are missing and then a 
ctl_mboxlist -u < filename.txt. is this the correct way ?