docs: update README

zhayujie · Feb 20, 2023 · c54548b · c54548b
1 parent fbac22d
commit c54548b
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -219,6 +219,8 @@ Hit Ctrl-C to quit.
 }
 ```
 
+注意：需将服务器ip地址配置在 "IP白名单" 内，否则用户将收不到主动推送的消息。
+
 ### 5. Gmail
 
 **需要：** 一个服务器、一个Gmail account
@@ -235,4 +237,4 @@ Follow [官方文档](https://support.google.com/mail/answer/185833?hl=en) to cr
       "host_password": "GMAIL ACCESS KEY"
     }
   }
-```
+```