fix: move email addresses to var file

roles/mail/tasks/main.yaml

@@ -12,7 +12,7 @@
     state: present
 
 - name: Deploy Postfix config
-  copy:
+  template:
     src: "{{ item }}"
     dest: "/etc/postfix/{{ item }}"
   with_items:
@@ -20,7 +20,6 @@
     - enabled_senders
     - main.cf
     - master.cf
-    - relocated
     - sender_blacklist
     - tls_policy
     - transport