Duplicate mail id issue, mailbox does not exist when dovecot tries to generate a new guid so replication can take place

15 Jan 2018


      Hi all,
When we run the below one user constantly shows as failed (dovecot
version is 2.2.13):
sudo doveadm replicator status "*"
mail.log shows the below for the user:
Jan  3 16:20:57 hostname dovecot: dsync-server(user): Error: Duplicate
mailbox GUID <guid number> for mailboxes <mailbox name.sub folder> and
<mailbox name.sub folder> - giving a new GUID <guid number> to <mailbox 
name.subfolder>
Jan  3 16:20:57 hostname dovecot: dsync-server(user): Error: Couldn't
update mailbox <sub folder name> GUID: Mailbox doesn't exist: <sub 
folder name>
Looking at their mailbox the folder does exist.
Has anybody seen this before and would be aware of the way to resolve?
Kind regards
Daniel Botting
Codethink Ltd