Acme: error: 400 :: urn:ietf:params:acme:error:dns :: DNS problem: SERVFAIL looking up A for

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., 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: sudo /opt/bitnami/letsencrypt/scripts/ -m YOURMAIL -d YOURDOMAIN

It produced this output: 2020/05/25 14:28:33 Could not obtain certificates:
error: one or more domains had a problem:
[] acme: error: 400 :: urn:ietf:params:acme:error:dns :: DNS problem: SERVFAIL looking
up A for - the domain’s nameservers may be malfunctioning, url:
Error: Something went wrong when running the following command:
$ “LEGO_BIN" --path "/opt/bitnami/letsencrypt" --tls --email="{email}” ${domain_args} run
Please check our documentation or open a ticket in our community forum, our team will be more than hap
py to help you!

My web server is (include version): NGINX 1.18.0

The operating system my web server runs on is (include version): Linux bitnami-wordpresspro-77dd 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-
20) x86_64

My hosting provider, if applicable, is: Google Cloud

I can login to a root shell on my machine (yes or no, or I don’t know): 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):

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The root name resolves to an IP:


But the WWW does not.

You have a DNS problem.


It has a CNAME pointing to itself, so it can’t work.       254     IN      CNAME

You should either replace the CNAME with an A record and whatever else you need, or change it to point to a different target like (Which might be represented as something like “@” or “” or “” in your DNS control panel.)


Wow! That’s worked. Thank you very much :slight_smile:

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