Roundcube DATABASE ERROR: CONNECTION FAILED
Date posted : 22/02/2019
This issue happens on a newly installed VestaCP due to some bugs. We’ve noticed this happens in Ubuntu 18.04 installation.
If you check the logs, you will see below errors:-
Error: User initialization failed: namespace configuration error: Duplicate namespace prefix: ""
The default namespace found in /etc/dovecot/dovecot.conf already included the inbox = yes option. So there was no need to include this elsewhere. So lets remove the reference of another file.
We need to remove the reference of below file
Restart dovecot service
$ systemctl restart dovecot
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