Hello, we participated last year to the closed testing phase of Let’s encrypt, it was pretty convincing
Now it’s still in public beta phase but our paid certificate (by Gandi) expire in March.
So to save the cost of a year wildcard certificate, we’d like to switch to let’s encrypt.
(you should see that the certificate is provided by let’s encrypt by putting the cursor over the green locker- there should be one if all is ok - at the left of url bar)
Note that all other subdomains are still encrypted with Gandi’s certificate, so only test www.
Please test in as much conditions as possible, with several browsers if you have, desktop, mobile OS, even exotic or semi-exotic (Sailfish OS, Opera mobile, lynx…) so that we can avoid big surprise that forces us to revert after a full migration. Don’t hesitate to spread in partner forums and bring feedback if you can/want to.
Actual FF doesn’t have “Clear Private Data” in Tools menu. At least I can’t find it.
Page you wrote is from year 2006.
I didn’t find it under Edit-Preferences either.
firefox seems capricious in its key management. I do not always manage to bring up “verified by let’s Encrypt” (because only root is encrypted I think).
But each time the cache was empty and I had to reload the page several times