diff --git a/roles/postfix/tasks/relay.yml b/roles/postfix/tasks/relay.yml
new file mode 100644
index 0000000..0c9a822
--- /dev/null
+++ b/roles/postfix/tasks/relay.yml
@@ -0,0 +1,14 @@
+---
+- name: listen to all interfaces
+  lineinfile:
+    path: /etc/postfix/main.cf
+    state: absent
+    regexp: "^#?inet_interfaces = .*"
+  notify: restart postfix
+
+- name: add relayed domains
+  lineinfile:
+    path: /etc/postfix/main.cf
+    regexp: "^#?relay_domains = .*"
+    line: "relay_domains = $mydestination, {{ relay_domains|join(',') }}"
+  notify: restart postfix