On 17 Oct 2019, at 13.01, Alex Ha via dovecot dovecot@dovecot.org wrote:
dsync-local(customer@example.com mailto:customer@example.com): Error: BUG: Mailbox renaming algorithm got into a potentially infinite loop, aborting dsync-local(customer@example.com mailto:customer@example.com): Error: Mailbox INBOX.Foldername sync: mailbox_rename failed: Invalid mailbox name 'Foldername-temp-1': Missing namespace prefix 'INBOX.'
As for fixing, you could see if deleting dovecot.mailbox.log from both replicas happens to fix this.
Unfortunatley deleting dovecot.mailbox.log on both replicas did not fix the problem.
I could reproduce the issue. Looks like deleting both dovecot.mailbox.log* and dovecot.list.index* fixes it. Tracking this internally in DOP-1501.