diff --git a/stack/mail-service.yml b/stack/mail-service.yml
new file mode 100644
index 0000000..7105900
--- /dev/null
+++ b/stack/mail-service.yml
@@ -0,0 +1,5 @@
+version: '3.8'
+
+services:
+  # 1. 核心郵件伺服器（DMS v14+）
+  mailserver:
\ No newline at end of file