diff --git a/roles/usermanagement/tasks/keycloak.yaml b/roles/usermanagement/tasks/keycloak.yaml
index 40cf604..2afa316 100644
--- a/roles/usermanagement/tasks/keycloak.yaml
+++ b/roles/usermanagement/tasks/keycloak.yaml
@@ -114,4 +114,4 @@
         host: "{{ smtp_internal_host }}"
         port: "{{ smtp_internal_host_port }}"
         ssl: "false"
-        user: "{{ smtp_service_user }}"
+        user: "{{ smtp_service_user }}@atlantishq.de"