I didn't configure the HTTPS on my domain so I'm not really sure where to start with this warning prompt that I only get on iOS Safari on my iPhone and iPad. I've never gotten this on a desktop with Mac Safari, Chrome, FF, or IE.
Can someone point me to a file on my ubuntu/apache EC2 server or somewhere on the site of my domain provider, GoDaddy, that deals with verifying certificates.
For those on Nginx you need to append the gd_bundle.crt file to your other .crt cert. Just cat gd_bundle.crt >> yourwebsite.crt and restart Nginx.
Tim,
If browsers on desktops are showing the SSL without warning, and the warning you are getting is on a mobile device, the issue is most likely with the intermediate certificate of the Certificate Authority that issued the SSL not being installed properly. I suggest that you contact the issuer of the certificate for help with this and not the host or the domain registrar.
I found the link which solved my problem.
I needed to put BOTH .crt files from GoDaddy into my /etc/apache2/ssl folder on my apache EC2 server and add the following to my /etc/apache2/httpd.conf file:
SSLCertificateFile /etc/apache2/ssl/mysite.com.crt
SSLCertificateChainFile /etc/apache2/ssl/gd_bundle.crt
来源：https://stackoverflow.com/questions/10196783/https-request-cant-verify-certificate-on-ios-safari