I have a new iMac which I use for most purposes, running 10.12.1 El
Capitan. Since I upgraded from 10.11, I've had occasional problems
where my browsers can't access Google and Apple's own sites.

Error message from Chrome on accessing gmail:

"this site can't provide a secure connection, mail.google.com doesn't
adhere to security standards".

Error message from Firefox on accessing Apple:

The owner of support.apple.com has configured their website improperly
to protect your information from being stolen, Firefox has not
connected to this website".

Safari did not produce an error message, but seemed unable to load
certain sites.

In the past, I've been able to clear this problem by Restarting, but
this hasn't worked today. Has anyone any ideas on this matter?

It's inconceivable that Google and Apple have the faults indicated. As
I'm unable to access gmail, I'm sending this from my older machine
still on 10.6.8 -- this does not have the above problem.

Thanks and Merry Christmas --

David Noel
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