When you start a new thread in the Help category, the forum software presents the questionnaire below. stevenzhu was asking grudnitzki1 to start a new thread and fill it out.
That doesn’t have much to do with you or this thread, though.
Back to you, I’ve pasted the questionnaire below. Can you fill it out and post it here? And answer the questions stevenzhu posted earlier?
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:
I ran this command:
It produced this output:
My web server is (include version):
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):
First of all, please attempt to upgrade your CTW client to latest version.
Mutli-VA issue, in your case, generally means you didn't give enough time for your DNS provider to propergrate your edits to DNS record across all their server. (So the request of challenge query might be inconsistent, which is an issue after Let's Encrypt enforced mutli-VA)
Which DNS provider did you use? CTW developer said there might be an option for you to set the duration between update your record and request let's Encrypt validation so that your provider will have enough time to propergrate. (I personally suggest to have a duration of at least 2 minutes)
Are you able to generate a new certificate after yesterday?
If so, I believe you are good to go. The email only serves as an suggestion that you might have this issue.
Let's Encrypt actually only turned on the Mutli-VA feature yesterday (Feb 19th) Before that, even if some of the secondary validation failed it won't give any error message in production environment.
P.S. Most people answering questions in this forum are volunteers. Unless you see an title with "Let's Encrypt staff", "Let's Encrypt engineer", "Certbot Engineer", almost all other people are volunteers. (Including moderators)
Further to this, I’ll be releasing a new version of Certify The Web (https://certifytheweb.com) with a couple of enhancements especially regarding more options for DNS propagation time (should be v4.1.7), this will be released as soon as it’s ready.
It would be useful to know who the DNS provider is, especially as their nameserver sync is taking more than a minute (the usual default) and that’s useful information for changing our defaults.