LetsEncrypt Announcing - Lets Encrypt for Domino v2.0 - Just Do SSL 

By Detlev Poettgen | 3/28/18 1:12 PM | Infrastructure - Notes / Domino | Added by Oliver Busse

If you are already using LE4D, be sure to update to the new version 2.0. Starting March, 16th, the renewal of certificates generated with version 1.0 is longer possible due to a changes Let's Encrypt made to their CA-API-infrastructure.