You could try fix this by manually renaming the problematic folder. This is a bug though.

Aki

Hi all!

I'm using Dovecot 2.2.36.4.
Maybe someone can help, this bug makes the replication unusable for me.

Thanks,

Alex

On Wed, Sep 25, 2019 at 5:03 PM Alex Ha <alex.handle@gmail.com> wrote:

Hi all!

I have two dovecot servers with dsync replication over tcp.
Replication works fine except for one user.

# doveadm replicator status
username                                                                                                 priority fast sync full sync success sync failed
customer@example.com                                                                            none     00:00:33  07:03:23  03:22:31     y

If i run dsync manually, i get the following error message:

dsync-local(customer@example.com): Debug: brain M: -- Mailbox renamed, restart sync --
dsync-local(customer@example.com): Error: BUG: Mailbox renaming algorithm got into a potentially infinite loop, aborting
dsync-local(customer@example.com): Error: Mailbox INBOX.Foldername sync: mailbox_rename failed: Invalid mailbox name 'Foldername-temp-1': Missing namespace prefix 'INBOX.'

For more info see the attached sync_loop.log

Thanks for your help,

Alex