First of all, you need to get a certificate for your Ubuntu server.
I am using Apache as my webserver.
We’re going to use the free certificate provider letsencrypt.
I recommend that you install the packages from the PPA because they are more up to date.
Continue reading “How to Install a Free SSL Certificate on Ubuntu”
First intall Postfix and mailutils
apt-get install postfix mailutils
Generate certificates to be used for TLS encryption and/or certificate Authentication:Continue reading “How to Install Postfix with TLS on Ubuntu 16.04”