To install your VikingCloud™ Digital Server certificate on Dovecot, you need either the .zip file that you received in your email from VikingCloud or you can download it within the VikingCloud Control Center. The .PEM file in the .zip file contains the "PEM Concatenated" certificate and the intermediate certificate.
Now, take the PEM concatenated certificate along with your private key and place them into a secure directory.
Open the Dovecot configuration file and set the following three options. If they're already set, adjust their values to match the following:
ssl_cert_file = /path/vikingcloudcert.pem <- PEM certificate ssl_key_file = /path/private.key ssl_disable = no <- enables SSL
To finish the installation, simply restart Dovecot. As soon as Dovecot has restarted, your certificate should be active.