Let's Encrypt auto renew is not working for domains or Plesk with renamed certificates

Symptoms

• Let's Encrypt auto-renew task is not working for Plesk or a domain.

• Plesk main log /var/log/plesk/panel.log contains following entries with debug being enabled:

  CONFIG_TEXT: INFO [extension/letsencrypt] Check if Panel or Mail Server is secured by Let's Encrypt certificate...
  INFO [extension/letsencrypt] Panel or Mail Server is not secured by Let's Encrypt certificate.

• The certificates on affected domains or Plesk itself were renamed previously.

Cause

Let's Encrypt auto-renew feature relies on certificate names and does not recognize certificate names other than Lets Encrypt example.com.

It is a Let's Encrypt extension bug #EXTLETSENC-483, which is planned to be fixed in future product updates.

Resolution

Until a fix became available, apply the following workaround:

for securing Plesk:

1. Log into Plesk.
2. Renew the certificate manually in Tools & Settings > SSL/TLS Certificates > + Let's Encrypt:
   

for securing a particular domain:

1. Log into Plesk.
2. Renew these certificates manually from Extensions > Let's Encrypt.