QuickTip: Running Domino with Let's Encrypt? You may have to do this  

By Oliver Busse | 10/7/22 3:36 AM | Infrastructure - Notes / Domino | Added by Roberto Boccadoro

We came across an issue with some Java code that uses the Apache HTTP client to access another resource on the same Domino server. It's basically an agent that collects stuff from other NSFs using an HTTP request. This works perfectly as long as your server works with a custom wild card SSL certificate from a "common" certificate authority. However, when you are using the Let's Encrypt certificate that you get using Domino's CertMgr, your code may stop working as the HTTP request will fail with an error like this: