Possibly there is a difference between 14.04 and 16.04, because on my 14.04 server they seem to have been created. I don't use them, though, but created my own with other names, and when having done so, I apparently had to modify the paths in /etc/dovecot/conf.d/10-ssl.conf.
Leaving this bug report to the server guide team to consider further.
Ok, thanks for your clarifications.
Possibly there is a difference between 14.04 and 16.04, because on my 14.04 server they seem to have been created. I don't use them, though, but created my own with other names, and when having done so, I apparently had to modify the paths in /etc/dovecot/ conf.d/ 10-ssl. conf.
Leaving this bug report to the server guide team to consider further.