diff --git a/ec2.yml b/ec2.yml
index d9cfef0..521f5eb 100644
--- a/ec2.yml
+++ b/ec2.yml
@@ -23,6 +23,10 @@
     - role: backups
       vars:
         backups_outdir: "/cold/backups"
+    - role: postfix-null
+      vars:
+        postfix_hostname: "9iron.club"
+        postfix_domain: "9iron.club"
     - role: grafana
       vars:
         grafana_mysql_password: !vault |
diff --git a/roles/postfix-null/templates/main.cf b/roles/postfix-null/templates/main.cf
index c32ed78..ce771be 100644
--- a/roles/postfix-null/templates/main.cf
+++ b/roles/postfix-null/templates/main.cf
@@ -1,4 +1,5 @@
 myhostname = {{ postfix_hostname }}
+mydomain = {{ postfix_domain }}
 myorigin = $mydomain
 #relayhost = $mydomain
 inet_interfaces = loopback-only