当为一个域名签发Let’s Encrypt证书时，报错：

Error creating new authz :: “domain.name” was considered an unsafe domain by a third-party API

参考：https://community.letsencrypt.org/t/error-creating-new-authz-domain-was-considered-an-unsafe-domain-by-a-third-party-api/18639

猜测Let’s Encrypt使用了Google的Safe Browsing接口，而关于此域名/网站有不良记录。

检测：https://www.google.com/transparencyreport/safebrowsing/diagnostic/?hl=en

看到：

Current status: Dangerous

domain.name is not safe to visit right now.

Site Safety Details

Some pages on this website send visitors to the following dangerous websites: a.site, b.site, and c.site.

等于说，如果这些不良记录继续存在，Let’s Encrypt是不会通过证书申请的。