diff --git a/iptables/meta/main.yml b/iptables/meta/main.yml
new file mode 100644
index 00000000..06dd422e
--- /dev/null
+++ b/iptables/meta/main.yml
@@ -0,0 +1,3 @@
+---
+dependencies:
+  - { role: '../../library/roles/postfix-relay', when: postfix_relay_client is defined and postfix_relay_client }