diff --git a/charts/mok/Chart.yaml b/charts/mok/Chart.yaml
index 8131a274800ef2bbd3816206a103804ade2264b0..a05b8417e8423e0c4fd6cacb9a2b44fea1935316 100644
--- a/charts/mok/Chart.yaml
+++ b/charts/mok/Chart.yaml
@@ -3,7 +3,7 @@ name: mok
 description: |
   Mail on Kubernetes (MoK) is a project to deploy a functional mailserver that runs without a database server on Kubernetes, taking advantage of configmaps and secret.
 type: application
-version: 0.10.1
+version: 0.10.2
 sources:
   - https://de.postfix.org/ftpmirror/index.html
   - https://github.com/dovecot/core
diff --git a/charts/mok/README.md b/charts/mok/README.md
index 498237de60c279b56557f1d7ea944588aa39f322..67bcca8b30c7392d91fdc3f57edc84ff7ccf6af1 100644
--- a/charts/mok/README.md
+++ b/charts/mok/README.md
@@ -1,6 +1,6 @@
 # mok
 
-![Version: 0.10.1](https://img.shields.io/badge/Version-0.10.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
+![Version: 0.10.2](https://img.shields.io/badge/Version-0.10.2-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
 
 Mail on Kubernetes (MoK) is a project to deploy a functional mailserver that runs without a database server on Kubernetes, taking advantage of configmaps and secret.
 
diff --git a/charts/mok/templates/postfix.yaml b/charts/mok/templates/postfix.yaml
index 843ade01eceb7894d848b162330e7b099187b84d..ac3eddb2c41ac3a03fa74e44b955cbacfe3a76f2 100644
--- a/charts/mok/templates/postfix.yaml
+++ b/charts/mok/templates/postfix.yaml
@@ -251,7 +251,7 @@ spec:
         - name: config
           configMap:
             name: {{ include "mok.fullname" . }}-postfix
-            defaultMode: 644
+            defaultMode: 0644
         - name: tls
           secret:
             secretName: {{ required "TLS secret for postfix is required" .Values.postfix.tls.secretName }}
diff --git a/charts/mok/tests/__snapshot__/postfix_test.yaml.snap b/charts/mok/tests/__snapshot__/postfix_test.yaml.snap
index 728d6a4b9af6531d4468f879315a8e6b641bdc5a..5aa1f779060def671803fbd8dd10bd0f324af2f7 100644
--- a/charts/mok/tests/__snapshot__/postfix_test.yaml.snap
+++ b/charts/mok/tests/__snapshot__/postfix_test.yaml.snap
@@ -620,7 +620,7 @@ should match snapshot:
               secret:
                 secretName: RELEASE-NAME-mok-postfix-maps
             - configMap:
-                defaultMode: 644
+                defaultMode: 420
                 name: RELEASE-NAME-mok-postfix
               name: config
             - name: tls