- Plesk for Linux
- Plesk for Windows
- There is no DNS record
The following message is displayed at the right bottom corner of Plesk Web Interface:
CONFIG_TEXT: ERR [extension/letsencrypt] Domain validation failed for www.example.com: Invalid response from https://acme-v01.api.letsencrypt.org/acme/authz/***. Details: Type: urn:acme:error:dns Status: 400 Detail: DNS problem: NXDOMAIN looking up A for www.example.com
Certificate for a domain without
www. is unnecessarily reissued by the keep-secured task.
This is Let's Encrypt extension bug with ID EXTLETSENC-571, which is planned to be fixed in one of the future product updates.
Create a CNAME record www for the domain as the example below:
Login to Plesk and set "Let's Encrypt" to "None" at Subscriptions > example.com > Customize > Additional Services or in assigned service plan Service Plans > Service_plan_name > Additional Services.