Moving from cIMAP-2.3.16 to 3.0.5

Savvas Karagiannidis karagian at
Thu May 17 15:55:48 EDT 2018

Hi James,
Users' subscription files are normally saved in /var/imap/user in
directories based on the user's initial. Search for username.sub files in
there. Seen status used to be in there too in username.seen files but that
changed in more recent versions, where seen status information is stored
inside the cyrus.index file for each mailbox.

For the users' subscription information just copy the .sub files in the
same directory structure.
For the seen status information try copying the .seen files too. Migrating
that information used to be an automatic procedure in version 2.4, the
first time the user logged in but not sure if it still applies to 3.x..

Savvas Karagiannidis

On Thu, May 17, 2018, 22:25 James B. Byrne via Info-cyrus <
info-cyrus at> wrote:

> I have managed to move the 2.3.16 mailstore and mailboxes.db to the
> 3.0.5 host and reconstructed the mailboxes using  'reconstruct -f -r
> -G -V max user/*'  Connections between squirrelmail and the new
> service appear to be working fine.  However, I have a couple of
> glitches and I would like to know if there is anything I can do to
> eliminate them before thae actual switchover, scheduled for this
> Saturday.
> 1.  All of the use folders are unsubscribed following the reconstruct.
> 2.  All of the messages show as unread following the reconstruct.
> Is there any way to avoid these consequences of transfer and reconstruct?
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