"can't establish a secure connection to the server"
So I have a MacMini from late 2012 running Yosemite 10.10.5. I don't use it much but now I get the error message when trying to connect to sites in Safari:
"can't establish a secure connection to the server"
I've looked for answers and have run thru the usual suspects. date and time are correct, I've changed the DNS servers to Open DNS, and past that, everything is up to date.
How do I get Safari on this Mac to connect to websites?
Earlier Mac models