diff --git a/postfix-relay/defaults/main.yml b/postfix-relay/defaults/main.yml
index 9109f665..4ffd53da 100644
--- a/postfix-relay/defaults/main.yml
+++ b/postfix-relay/defaults/main.yml
@@ -13,10 +13,12 @@ postfix_use_sasl_auth: True
 postfix_smtp_sasl_auth_enable: "yes"
 postfix_smtp_create_relay_user: True
 # See vars/isti-global.yml
-postfix_relay_host: smtp-relay.example.com
+postfix_relay_host: smtp-relay.research-infrastructures.eu
+#postfix_relay_host: smtp-relay.example.com
 postfix_relay_port: 587
 postfix_default_destination_concurrency_limit: 20
 #postfix_smtp_relay_user: smtp-user
+postfix_smtp_relay_user: '{{ ansible_fqdn }}'
 # This one has to be set inside a vault file
 #postfix_smtp_relay_pwd: set_you_password_here_in_a_vault_encrypted_file