diff --git a/defaults/main.yml b/defaults/main.yml
index da00e41..3f04ffa 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -16,6 +16,7 @@ postfix:
   transport_maps: []
   sender_dependent_relayhost_maps: ''
   alias_maps: ''
+  virtual_alias_domains: []
   virtual_alias_maps: hash:/etc/postfix/virtual
   virtual_regex: []
   virtual_mailbox_domains: []