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The certificate errors related to 516 Upstream Certificate CN Mismatch are becoming very problematic for our company. Marketing emails are particularly problematic, and this is disruptive to our staff when trying to sign up for webinars and other "no...
We are using SSL decryption, and we have the Umbrella root certificate deployed otherwise, every site would break. The issue I am speaking of is documented here: Error 516 Upstream Certificate CN Mismatch – Cisco Umbrella
Ken, you are correct that documented fixes exist, but getting companies to fix this is not easy or even feasible in many cases. For example, Home Depot's emails with order tracking links were breaking with this 516 Upstream error.The other challenge ...