Allowed "Well-Known URIs".

kkomelin · kkomelin · commit c40a921f805e · 2016-04-29T17:32:42.000+03:00
diff --git a/sites-available/example.com.conf b/sites-available/example.com.conf
@@ -56,6 +56,12 @@ server {
     ## Uncomment if you're proxying to Apache for handling PHP.
     #proxy_http_version 1.1; # keep alive to the Apache upstream
 
+    # Allow "Well-Known URIs" as per RFC 5785.
+    # Necessary for Let’s Encrypt validation server.
+    location ~* ^/.well-known/ {
+        allow all;
+    }
+
     ################################################################
     ### Generic configuration: for most Drupal 7 sites.
     ################################################################
