fix: enable and start stunnel4

roles/smtprelay/tasks/stunnel.yml

@@ -12,6 +12,12 @@
     mode: 0644
   notify: Restart stunnel4
 
+- name: Ensure stunnel is enabled and running
+  ansible.builtin.service:
+    name: stunnel4
+    state: started
+    enabled: true
+
 - name: Rewrite var smtprelay_host
   ansible.builtin.set_fact:
     smtprelay_host: "localhost"