diff --git a/roles/docker-mailu/templates/docker-compose.yml.j2 b/roles/docker-mailu/templates/docker-compose.yml.j2
index e412ce93..1e90c60d 100644
--- a/roles/docker-mailu/templates/docker-compose.yml.j2
+++ b/roles/docker-mailu/templates/docker-compose.yml.j2
@@ -24,7 +24,7 @@ services:
       - "127.0.0.1:{{ http_port }}:80"
       - "{{ ip4_address }}:25:25"
       - "{{ ip4_address }}:465:465"
-      - "{{ ip4_address }}:{{system_email_smtp_port}}:{{system_email_smtp_port}}"
+      - "{{ ip4_address }}:587:587"
       - "{{ ip4_address }}:110:110"
       - "{{ ip4_address }}:995:995"
       - "{{ ip4_address }}:143:143"