diff --git a/ec2.yml b/ec2.yml
index 521f5eb..4a8f93c 100644
--- a/ec2.yml
+++ b/ec2.yml
@@ -25,7 +25,7 @@
         backups_outdir: "/cold/backups"
     - role: postfix-null
       vars:
-        postfix_hostname: "9iron.club"
+        postfix_hostname: "mail.9iron.club"
         postfix_domain: "9iron.club"
     - role: grafana
       vars: