diff --git a/test/docker-compose.yml b/test/docker-compose.yml
index d0a6a13..e7350b5 100755
--- a/test/docker-compose.yml
+++ b/test/docker-compose.yml
@@ -83,7 +83,7 @@ services:
     restart: unless-stopped
     cpus: 2
     mem_limit: 512MB
-    hostname: test.example.org
+    hostname: test.nodomain.org
     volumes:
       - mail_store:/srv/mail:rw
       - mail_ssl:/certs