Add mail playbook and update firewall rules for mail services

ansible/playbook_mail.yml

@@ -0,0 +1,45 @@
+---
+- name: Mail Playbook (K8s)
+  hosts: mail
+  gather_facts: true
+
+# Specific tasks for this playbook
+  tasks:
+    - name: Set required facts
+      ansible.builtin.set_fact:
+        mail_home: "{{ persistent_data | default('/var/lib') }}/mail"
+        mail_user_id: 1000
+        mail_group_id: 1000
+      tags: always
+
+    - name: Set required facts
+      ansible.builtin.set_fact:
+        mail_folders: 
+          - "{{ mail_home }}/getmail"
+          - "{{ mail_home }}/mailboxes"
+      tags: always
+
+    - name: Create required mail home folder
+      become: true
+      ansible.builtin.file:
+        state: directory
+        path: "{{ mail_home }}"
+        mode: "0750"
+        owner: "{{ mail_user_id }}"
+        group: "{{ mail_group_id }}"
+      tags:
+        - tasks
+        - tasks::folders
+
+    - name: Create required mail folders
+      become: true
+      ansible.builtin.file:
+        state: directory
+        path: "{{ item }}"
+        mode: "0750"
+        owner: "{{ mail_user_id }}"
+        group: "{{ mail_group_id }}"
+      loop: "{{ mail_folders }}"
+      tags:
+        - tasks
+        - tasks::folders