diff --git a/config/piler-ssl.yml b/config/piler-ssl.yml
index 268d2f0..3476531 100644
--- a/config/piler-ssl.yml
+++ b/config/piler-ssl.yml
@@ -26,7 +26,7 @@ services:
       - /var/run/docker.sock:/var/run/docker.sock:ro
     environment:
       - LETSENCRYPT_EMAIL=${LETSENCRYPT_EMAIL}
-      - LETSENCRYPT_TESTING=${LETSENCRYPT_TESTING:-false}
+      - ENABLE_IPV6=${NGINX_ENABLE_IPV6:false}
 
   mysql:
     image: mariadb:${MARIA_DB_VERSION}
@@ -90,6 +90,7 @@ services:
       - VIRTUAL_HOST=${PILER_DOMAIN}
       - LETSENCRYPT_HOST=${PILER_DOMAIN}
       - LETSENCRYPT_EMAIL=${LETSENCRYPT_EMAIL}
+      - LETSENCRYPT_TEST=${LETSENCRYPT_TEST:-false}
     ports:
       - "25:25"
     volumes:
diff --git a/piler.conf.example b/piler.conf.example
index 3b4afe7..e6421d4 100644
--- a/piler.conf.example
+++ b/piler.conf.example
@@ -51,7 +51,12 @@ LETSENCRYPT_EMAIL="admin@example.com"
 
 # Let's Encrypt Testing (staging) server usage
 
-LETSENCRYPT_TESTING=false
+LETSENCRYPT_TEST=false
+
+# ------------ Nginx Settings -------------
+
+# Enables NGINX to listen on IPv6 too
+NGINX_ENABLE_IPv6=true
 
 # ------ optional Mailcow Settings --------