I'm going to assume your acme-client configuration is in order and that you are using httpd as your web server.
Did you not perhaps forget to reload httpd via rcctl after renewing your certificate? Otherwise, I suspect you're going to have to give us more context. Regards, Jean-Pierre On 21/02/16 06:47pm, Teno Deuter wrote: > OpenBSD 6.9-beta (GENERIC) #328: Mon Feb 15 10:31:18 MST 2021 > > I run: > > # acme-client -vF <<mydomain>>.com > acme-client: /etc/ssl/<<mydomain>>.com.crt: certificate valid: 89 days left > acme-client: /etc/ssl/<<mydomain>>.com.crt: forcing renewal > acme-client: https://acme-v02.api.letsencrypt.org/directory: directories > acme-client: acme-v02.api.letsencrypt.org: DNS: 172.65.32.248 > acme-client: > https://acme-v02.api.letsencrypt.org/acme/finalize/86925799/7946011420: > certificate > acme-client: order.status 3 > acme-client: > https://acme-v02.api.letsencrypt.org/acme/cert/045439171e7c06c448e2584a12e832150e60: > certificate > acme-client: /etc/ssl/<<mydomain>>.com.crt: created > acme-client: /etc/ssl/<<mydomain>>.com.fullchain.pem: created > > but when I access it in Firefox I get a warnung because: > > Let's Encrypt > Validity > Not Before 11/1/2020, 9:25:02 PM (Eastern European Standard Time) > Not After 1/30/2021, 9:25:02 PM (Eastern European Standard Time) > > Thank you