Improved management of TLS certificates
HCL Domino® 12 introduces a new server task, Certificate Manager (CertMgr), that works with a new database, Certificate Store (certstore.nsf) to manage TLS certificates in your Domino environment.
You use CertMgr and certstore.nsf to completely automate requesting, configuring, and renewing free, widely trusted TLS certificates from the Let's Encrypt® certificate authority (CA). You can also process certificate signing requests for other third-party CAs. In this case, you manually submit the generated CSR to the CA, and paste the certificates received into certstore.nsf.
For more information, see Managing TLS certificates with Certificate Manager.