Peer's Certificate issuer is not recognized

I am constantly getting emails from my Rockstor servers with the following messages. What do I need to do to correct this?

/etc/cron.hourly/0yum-hourly.cron:

Could not get metalink https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=x86_64 error was
14: curl#60 - “Peer’s Certificate issuer is not recognized.”

Thanks,

Hi @lindensd,

Looks like there’s a problem in the Chain for mirrors.fedoraproject.org’s SSL certificate. This isn’t a Rockstor issue, but a general OS issue and you’ll want to either; a) disable the fedoraproject yum repo or; b) import the SSL certificate chain into CentOS.

Thank you for your response. I will see what I can do.