Let's encrypt: Renewal fails when using DNS for validation

Publication date: 2020-03-26

Issue: "certbot renew" fails when using DNS for validation

The following error message appears:

Renewal configuration file /etc/letsencrypt/renewal/mydomain.de.conf (cert: mydomain.de) produced an unexpected error: 'Namespace' object has no attribute 'dns_rfc2136_credentials'. Skipping.

Solution: Install missing package

pip3 install certbot-dns-rfc2136