-# Path to certificate authority (default: https://acme-v01.api.letsencrypt.org/directory)
-#CA="https://acme-v01.api.letsencrypt.org/directory"
-
-# Path to certificate authority license terms redirect (default: https://acme-v01.api.letsencrypt.org/terms)
-#CA_TERMS="https://acme-v01.api.letsencrypt.org/terms"
+# URL to certificate authority or internal preset
+# Presets: letsencrypt, letsencrypt-test, zerossl, buypass, buypass-test
+# default: letsencrypt
+#CA="letsencrypt"