[Dovecot] Maildirs location migration

[Timo Sirainen]

On 3.4.2013, at 18.42, Thomas Hummel <hummel at pasteur.fr> wrote:

> I'm using dovecot-2.1.15 with Maildir mailboxes located on an NFS filer.
> Postfix is used to deliver mail through procmail ("mailbox_command) as LDA.
> 
> Our team has bought another filer and everything is meant to go on it, so we're
> planning to migrate those mailboxes to the new filer.
..
> I was wondering if such a migration could be done differently in order to be
> seamless to the user :
> 
> - for the postfix part, it would be easy, I guess, to create a new service (and
>  a new transport map using this service) to deliver to the new location
> 
> - but for the imap part, I'm not sure if it can be done. My guess is that, if
>  feasible, it would involve some namespace settings and a dsync copy but I
>  cannot figure out how exactly.

http://wiki2.dovecot.org/Tools/Dsync#example_converting works for moving mailboxes as well as converting. It works even while procmail is used to deliver mails.