Recovered IMAP emails

Question

An IMAP user's mailbox ran out of quota. Increasing the quota (and restarting the service) didn't help. Looking at the IMAP log, the SQUAT index error for this user was preventing incoming email from being delivered and outgoing email was not being saved in 'Sent Messges' even though the mail was being sent out.
Followed the instruction in
http://docs.info.apple.com/article.html?artnum=107996
to rebuild the mailbox of the affected user. Didn't resolve the issue.
Followed the 2nd part of the instructions to rebuild the maiboxes for all user.
That did not work either. Took a while for reconstruct to run, with terminal
messages showing rebuild steps. However, when the mail service was restarted,
none of the previous Accounts were reestablished. Not sure where the problem.
Attempted reconstruct again , but this time the command finished quickly.
Checking in SMTP and IMAP after the reconstruct showed users' mailbox was not
available to access email.
The only way I could get the incoming/outgoing to work again is to change the
spool directory from /var/spool/imap to /var/spool/imap2.
New paths for each user (e.g., /var/spool/imap2/user/UserA) was automatically
created.
Is there a way import all the previous emails in the appropriate mailboxes
from /var/spool/imap/user back to the users new IMAP spool path directly
on the server? If not, is it possible to download each user's spool directory
to their desktop/laptop and import the emails to IMAP?
Any suggestions to resolve this is much appreciated.

Answer 1

Thank you for the suggestions and URL to mailbfr.
Yes, there are message is /var/spool/imap/user/username(s) in the standard naming convention (e.g., 2346645., 323342. ...). Since a few users created folders inside their IMAP, it is in paths like /var/spool/imap/user/usernameX/ProjectA/, /var/spool/imap/user/usernameY/ProjectB/
Unfortunately, I had to bring the mail service back online and there are new emails in /var/spool/imap2/user/username(s).
Saw another posting in a cyrus forum to try the following:
(A) From webmail, create a IMAP folder 'RecoveredEmails' (and additional subfolders
underneath that) for each user.
(B) For each user, copy the emails (i.e., files with NNNNNN. names)
from from archive, in my case from /var/spool/imap/user/(username)/(folderName)/ to /var/spool/imap2/user/(username)/RecoveredEmail/(foldername)/
(C) Run the cyrus Reconstruct for each user
Since mailbfr seems to give me more options, can do the same for each user
using mailbfr?
mailbfr -m (username)
There are not that many users (<10) and only 2 or 3 have lots of folders/subfolders.
My problems started with 1 user having too many emails in
'Deleted'. Never purged them so there are tens of thousands of
emails there. The selective copying of files allows me restore only
the emails needed, not the Deleted ones.
Thanks again for your help. I have indicated the users the "lost"
emails are still in archive and will be restored in coming days.
Your suggestions are much appreciated.