Hi. After receiving an email about “TLS-SNI-01 validation is reaching end-of-life and will stop working on February 13th, 2019. Must update ACME client to use an alternative validation method (HTTP-01, DNS-01 or TLS-ALPN-01) before this date or certificate renewals will break and existing certificates will start to expire”, I when to this site and read instructions on what to do mitigate this.
Here is my info:
certbot --version certbot 0.26.1
but when I run:
certbot renew --dry-run
I get this error:
Attempting to renew cert (my.server.com) from /etc/letsencrypt/renewal/unix.com.conf produced an unexpected error: Failed authorization procedure. … my. server.com (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain
What am I doing wrong?