diff --git a/host_vars/mailcow.yml b/host_vars/mailcow.yml
new file mode 100644
index 0000000..566860f
--- /dev/null
+++ b/host_vars/mailcow.yml
@@ -0,0 +1,17 @@
+---
+branch: master
+
+#ansible_cron_minute: "40"
+#ssh_port: 22
+#ssh_users: "user1 user2"
+copy_ssh_priv_keys: false
+
+# platform-specific
+linode_instance: false
+microcode_amd_install: false
+microcode_intel_install: false
+proxmox_instance: false
+raspberry_pi: false
+
+# server
+unattended_upgrades: true
diff --git a/hosts b/hosts
index 0221e68..4ead043 100644
--- a/hosts
+++ b/hosts
@@ -49,6 +49,7 @@ docker02
 
 [fileserver]
 coruscant.universe.local
+samba-ad-dc
 
 [glustertest]
 glustertest01
@@ -70,6 +71,7 @@ mewimeet.de jitsi_fqdn=mewimeet.de
 [mailserver]
 coruscant.universe.local
 mail.mewissen.site
+mailcow
 
 [mastodon]
 mewitoot.de