diff --git a/apps/nginx-certbot/base/deployment.yaml b/apps/nginx-certbot/base/deployment.yaml
index 8fc925a..094f135 100644
--- a/apps/nginx-certbot/base/deployment.yaml
+++ b/apps/nginx-certbot/base/deployment.yaml
@@ -96,11 +96,9 @@ spec:
         image: ungleich/ungleich-certbot
         ports:
           - containerPort: 80
-        env:
-          - name: DOMAIN
-            valueFrom:
-              fieldRef:
-                fieldPath: spec.nodeName
+        envFrom:
+        - configMapRef:
+          name: certbot-configmap
         volumeMounts:
           - name: etcletsencrypt
             mountPath: "/etc/letsencrypt"
diff --git a/apps/nginx-certbot/overlays/ungleich/kustomization.yaml b/apps/nginx-certbot/overlays/ungleich/kustomization.yaml
index a94104f..4d33212 100644
--- a/apps/nginx-certbot/overlays/ungleich/kustomization.yaml
+++ b/apps/nginx-certbot/overlays/ungleich/kustomization.yaml
@@ -1,6 +1,8 @@
-commonLabels:
-  app: ungleichetherpad
-  customer: ungleich
 bases:
 - ../../base
 namePrefix: ungleich-
+configMapGenerator:
+- name: certbot-configmap
+  literals:
+  - DOMAIN=ungleich-tls1.default.svc.c2.k8s.ooo
+  - EMAIL=technik@ungleich.ch