- Plesk 12.5 for Linux
- Plesk Onyx for Linux
Unable to issue a Let's Encrypt certificate with Let's Encrypt extension. The following error appears in Plesk:
PLESK_ERROR: Error: Could not issue a Let's Encrypt SSL/TLS certificate for example.com. Authorization for the domain failed.
Invalid response from https://acme-v01.api.letsencrypt.org/acme/authz/tJtfLEnZ8koD2Ckyz2JyRoJkjGUO1T9MSm7hFVTr2TE.
Detail: DNS problem: SERVFAIL looking up A for example.com
A test file
test.txtcreated in the domain directory
/var/www/vhosts/example.com/httpdocs/.well-known/acme-challenge/is accessible from the Internet via the URL http://example.com/.well-known/acme-challenge/test.txt .
Let's Encrypt server is unable to reach the domain.
Make sure that domain can be resolved globally.
In case it is a newly created domain, wait until DNS propagation is completed. It can take up to 48 hours.
If after 48 hours the issue still persists then submit a post in LE community https://community.letsencrypt.org/ .