diff --git a/.env.sample b/.env.sample
index 54454ea..0f19a4d 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,7 +1,7 @@
-TYPE=postfix_relay
+TYPE=postfix-relay
 STACK_NAME=postfix_relay
 
-DOMAIN=example.com
+DOMAIN=postfix-relay.example.com
 LETS_ENCRYPT_ENV=production
 
 # Postfix options, see