diff --git a/tasks/mail.yaml b/tasks/mail.yaml
index 006b124..50f51c7 100644
--- a/tasks/mail.yaml
+++ b/tasks/mail.yaml
@@ -42,6 +42,22 @@
           name: ca-issuer
           kind: ClusterIssuer
 
+- name: Create a persistent volume claim for mail
+  k8s:
+    state: present
+    definition:
+      apiVersion: v1
+      kind: PersistentVolumeClaim
+      metadata:
+        name: dkim
+        namespace: mail
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 512Mi
+
 - name: Create a persistent volume claim for mail
   k8s:
     state: present
@@ -131,6 +147,8 @@
                     mountPath: /etc/letsencrypt
                   - name: mail
                     mountPath: /var/mail
+                  - name: dkim
+                    mountPath: /tmp/docker-mailserver/opendkim
                 ports:
                   - containerPort: 25
                   - containerPort: 465
@@ -198,6 +216,9 @@
               - name: mail
                 persistentVolumeClaim:
                   claimName: mail
+              - name: dkim
+                PersistentVolumeClaim:
+                  claimName: dkim
 
 - name: Expose deployment as a service
   k8s: