diff --git a/roles/mail_server/molecule/default/molecule.yml b/roles/mail_server/molecule/default/molecule.yml
index acf4b72d4db28dc4df5fae4aa9daf6a91cefa641..1367899784937cd530a7c7522c103343fc66db70 100644
--- a/roles/mail_server/molecule/default/molecule.yml
+++ b/roles/mail_server/molecule/default/molecule.yml
@@ -57,7 +57,7 @@ platforms:
       - parameters-mandatory
       - stretch
     box: debian/contrib-stretch64
-    memory: 1024
+    memory: 1536
     cpus: 1
     interfaces:
       - auto_config: true
@@ -70,7 +70,7 @@ platforms:
       - parameters-optional
       - stretch
     box: debian/contrib-stretch64
-    memory: 1024
+    memory: 1536
     cpus: 1
     interfaces:
       - auto_config: true
@@ -80,6 +80,8 @@ platforms:
 
 provisioner:
   name: ansible
+  playbooks:
+    cleanup: cleanup.yml
   config_options:
     defaults:
       force_valid_group_names: "ignore"