参考文档

https://knowledge.symantec.com/support/ssl-certificates-support/index?page=content&actp=CROSSLINK&id=INFO2047

Symantec certificates require the installation of a Intermediate CA to be fully trusted in all browsers. To download CA certificate, copy the entire contents of the first text box below (including the BEGIN CERTIFICATE and END CERTIFICATE lines) and paste in to a new text document on the server. Do not use "rich" text editors (such as Microsoft Word) to save this text document, as doing so may add extra line break characters in to the certificate.

最近客户反馈，Android手机打开公司网站，报证书问题。而且是塞门铁克证书的问题。

中间过程很复杂，后来在官网上找到了证书链补了进去，就恢复了。

再次印证2点：

     1 当某个软件出问题时，其官网永远是最聪明的。

     2 当出现棘手问题时，去刨根问底，找出整个过程的每一步，结合报错信息，一定能解决问题。

由于缺少证书链，导致Android手机提示网站不安全