为什么我托管在 github 上的静态博客总会收到 CNAME 的警告邮件呢?

The page build completed successfully, but returned the following warning:
Your site’s DNS settings are using a custom subdomain, www.septenary.cn, that’s set up as an A record. We recommend you change this to a CNAME record pointing at Ryfthink.github.io. Instructions on configuring a subdomain for use with GitHub Pages can be found at: https://help.github.com/articles/setting-up-a-custom-domain-with-github-pages/
For information on troubleshooting Jekyll see:
https://help.github.com/articles/using-jekyll-with-pages#troubleshooting
If you have any questions you can contact us by replying to this email.

大概意思是虽然我用 A 记录 配置 www.septenary.cn 指向我的 Github Page ,但是它建议最好用 CNAME 记录 指向 Ryfthink.github.io 来加快解析速度。
我是在 万网 购买域名并配置解析的,如果你用DNSPod 帮你配置解析,同样也可以生效。

查看原来的 配置是这样的
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将 A 记录 配置暂停,然后添加一个 CNAME 记录:
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启用后稍等几分钟,你新创建的域名解析就会生效。这样提高了域名解析速度,以后也不会收到这恼人的 Page build warning 警告邮件了。