diff --git a/Docker-Mail-Server.md b/Docker-Mail-Server.md
new file mode 100644
index 0000000..1891d48
--- /dev/null
+++ b/Docker-Mail-Server.md
@@ -0,0 +1,4 @@
+# 环境准备
+
+1. 公网服务器，含公网IP
+2. 
\ No newline at end of file