diff --git a/meta/main.yml b/meta/main.yml
index 29044c0..215569d 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -31,4 +31,5 @@ dependencies:
     version: master
     name: postfix-client
     state: latest
+    when: postfix_relay_client is defined and postfix_relay_client