I made an IDEA plugin for my web service which sends a request to my website. The website uses HTTPS with a valid Let's Encrypt certificate. All browsers and Qualys's SSL Test accept the certificate, but IDEA says "Server's certificate is not trusted". Maybe IDEA does not have the necessary CA certificates to validate Let's Encrypt certificates? Is this being fixed in some future update?
IntelliJ IDEA 2016.1.2
Build #IC-145.972, built on May 14, 2016
JRE: 1.8.0_76-release-b162 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
on OS X 10.11.4