Certificate issue on host

[rtholmes]

Not sure if this is important, but it is a recurring message:

proxy     | 2023/01/12 06:26:50 [error] 21#21: send() failed (111: Connection refused) while resolving, resolver: 127.0.0.1:53
proxy     | 2023/01/12 06:26:55 [error] 21#21: send() failed (111: Connection refused) while resolving, resolver: 127.0.0.1:53
proxy     | 2023/01/12 06:27:00 [error] 21#21: send() failed (111: Connection refused) while resolving, resolver: 127.0.0.1:53
proxy     | 2023/01/12 06:27:05 [error] 21#21: r3.o.lencr.org could not be resolved (110: Operation timed out) while requesting certificate status, responder: r3.o.lencr.org, certificate: "/etc/ssl/fullchain.pem"

[winstan]

This is the proxy trying to get OCSP responses (says community.letsencrypt). Looking for certificate revocation... Probably blocked by the firewall.