certbot renew produced this output:
SSLError: (“bad handshake: Error([(‘SSL routines’, ‘SSL3_GET_SERVER_CERTIFICATE’, ‘certificate verify failed’)],)”,)
Please see the logfiles in /var/log/letsencrypt for more details.
My web server is: Apache/2.4.10 (Debian)
The operating system: SMP Debian 3.16.51-3 (2017-12-13) x86_64 GNU/Linux
I have root access.
echo | openssl s_client -connect acme-v01.api.letsencrypt.org:443 gives the following output:
Verify return code: 9 (certificate is not yet valid)
Any suggestions what I can do to fix this?
Thank you very much