Processing triggers for dovecot-core (1:2.2.22-1ubuntu2) ...
Job for dovecot.service failed because the control process exited with error code. See "systemctl status dovecot.service" and "journalctl -xe" for details.
invoke-rc.d: initscript dovecot, action "restart" failed.
dpkg: error processing package dovecot-core (--configure):
subprocess installed post-installation script returned error exit status 1
Processing triggers for libc-bin (2.23-0ubuntu3) ...
From log:
Processing triggers for dovecot-core (1:2.2.22-1ubuntu2) ...
Job for dovecot.service failed because the control process exited with error code. See "systemctl status dovecot.service" and "journalctl -xe" for details.
invoke-rc.d: initscript dovecot, action "restart" failed.
dpkg: error processing package dovecot-core (--configure):
subprocess installed post-installation script returned error exit status 1
Processing triggers for libc-bin (2.23-0ubuntu3) ...