> For the complete documentation index, see [llms.txt](https://kawsing.gitbook.io/opensystem/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kawsing.gitbook.io/opensystem/andoid-shou-ji/untitled/tong-zhi.md).

# 通知

### Gmail的

Gmail可以用於通知中。如果您為帳戶啟用了二階段驗證，則必須創建[應用密碼](https://myaccount.google.com/apppasswords)

```
SMTP Server: smtp.gmail.com
SMTP Port: 587
SSL/TLS: Yes
Sender email: rootthe@gmail.com (include domain)
Authentication: Yes
Username: rootthe@gmail.com (include domain)
Password: <the app password here>
Primary email: rootthe@gmail.com
Secondary email: optional
```

![](/files/-Lpf4sjrb3EvyHaTqE35)

![](/files/-Lpf57BLu6j4x60bFKR-)

![](/files/-Lpf5U8URjCIbh6M2T8d)

![](/files/-LpfDQdC1kD6bIy_-Jto)

信件寄不出去的可能問題(DNS的問題)

837B8E008A0 424 Thu Oct 3 08:08:13 <kawsing@gmail.com> (Host or domain name not found. Name service error for name=smtp.gmail.com type=MX: Host not found, try again) <kawsing@gmail.com>

\-- 7 Kbytes in 18 Requests. root\@omvNAS1:/etc/postfix# ping tw\.yahoo.com ping: tw\.yahoo.com: 解析名稱時發生暫時性的錯誤