Failed Validation Limit

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My domain is:

I ran this command: sudo certbot certonly --manual -d

It produced this output: Certbot failed to authenticate some domains (authenticator: manual). The Certificate Authority reported these problems:
Type: dns
Detail: DNS problem: NXDOMAIN looking up A for - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for - check that a DNS record exists for this domain

Hint: The Certificate Authority failed to verify the manually created challenge files. Ensure that you created these in the correct location.

Some challenges have failed.
Ask for help or search for solutions at See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

My web server is (include version): i dont have a web server and i want to use TXT domain validation

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):

When i tried multiple times and it gave this error pls -->

Requesting a certificate for

An unexpected error occurred:

Error creating new order :: too many failed authorizations recently: see Failed Validation Limit - Let's Encrypt

Did you read that?
Did you click the link?
It explains what the rate limits are and how they are enforced.

If it fails and fails and fails, trying again without making any change will likely just produce another failure.

You should do such testing in the LE testing environment.
You should be prepared to make change(s) OR you may remain in the same place.
If you don't know what to change, start with the error:

You mention:

But you don't mention what was entered/chosen after that.


Try adding --preferred-challenges=dns to your command to use DNS Challenge.

sudo certbot certonly --manual -d --preferred-challenges=dns


You may be in luck: nameserver = nameserver = nameserver = nameserver =

You may be able to automate the DNS-01 authentication process.



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