diff --git a/roles/mailserver/tasks/configure_postfix.yml b/roles/mailserver/tasks/configure_postfix.yml
index 6e23eac..04d3e82 100644
--- a/roles/mailserver/tasks/configure_postfix.yml
+++ b/roles/mailserver/tasks/configure_postfix.yml
@@ -20,7 +20,7 @@
     - {key: "milter_default_action", value: "accept"}                                                                                                     
     - {key: "mydestination", value: "'localhost, kashyyyk, coruscant'"}                                                                                     
     - {key: "myhostname", value: "kashyyyk.universe.local"}                                                                                               
-    - {key: "mynetworks", value: "{{ mynetworks }}"}                           
+    - {key: "mynetworks", value: "'{{ mynetworks }}'"}                           
     - {key: "mynetworks_style", value: "subnet"}                                                                                                          
     - {key: "readme_directory", value: "no"}                                                                                                              
     - {key: "recipient_canonical_maps", value: "hash:/etc/postfix/recipient-canonical"}