Postfix

Postfix is working for email in and out.

roles/api/tasks/main.yml

 ---
-- name: Stat "/etc/exim4/mail-receiver-environment.json"
+- name: Stat "/etc/postfix/mail-receiver-environment.json"
   stat:
-    path: "/etc/exim4/mail-receiver-environment.json"
+    path: "/etc/postfix/mail-receiver-environment.json"
   register: mail_receiver_environment
 
 - block:
@@ -9,9 +9,9 @@
   - name: Discourse scripts environmental variables file in place
     template:
       src: templates/mail-receiver-environment.json.j2
-      dest: /etc/exim4/mail-receiver-environment.json
-      mode: 0640
-      group: Debian-exim
+      dest: /etc/postfix/mail-receiver-environment.json
+      mode: 0644
+      group: root
       owner: root
 
   when: mail_receiver_environment.stat.exists == False