caServer wieder aktiviert

Alle Zertifikatsupdates laufen auf: "DNS problem: query timed out looking up" mit acme Error 400. 
Ich habe keine Ahnung woran es genau liegt.
Möglicherweise muss ich bald zu Version 2 migrieren.
https://github.com/traefik/traefik/issues/5103#top

config/traefik.toml

@@ -70,7 +70,7 @@ defaultEntryPoints = ["https","http"]
   storage = "acme.json"
   onDemand = false
   onHostRule = true
-#  caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
+  caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
   entryPoint = "https"
   [acme.httpChallenge]
     entryPoint = "http"
@@ -85,7 +85,9 @@ endpoint = "unix:///var/run/docker.sock"
 domain = "czechman.dynvpn.de"
 watch = true
 exposedByDefault = false
-usebindportip = true
+#https://github.com/traefik/traefik/issues/3943#issuecomment-425255489
+#Fehler laut log: msg="cannot determine the IP address (got 0.0.0.0) for the..."
+#usebindportip = true
 network = "traefik"
 
 

docker-compose.traefik.yml

@@ -13,7 +13,7 @@ networks:
 
 services:
   traefik:
-    image: traefik:1.7.4
+    image: traefik:1.7
     restart: always
     environment:
     - PUID=1000