gnulab
You can rename your .pem file to cert.pem and .key file to key.pem and put it in this directory /opt/mailcow-dockerized/data/assets/ssl/
dhparams.pem This file is an intermediate certificate, which can be generated during installation and then put it in this directory /opt/mailcow-dockerized/data/assets/ssl/
Then execute docker-compose up -d
If you don’t use the /opt/mailcow-dockerized/data/assets/ssl/ directory, you’ll need to change the path to the certificate in all configuration files
You can check the nginx configuration in the /opt/mailcow-dockerized/data/conf/nginx directory if you are using the nginx provided by mailcow directly
Without the dhparams.pem file, you won’t be able to see the contents of your mailbox in webmail, so I don’t know what it does