Oh perfect this is what I’m getting then:
2022/05/29 14:56:14.160 INFO using adjacent Caddyfile
2022/05/29 14:56:14.160 WARN Caddyfile input is not formatted; run the 'caddy fmt' command to fix inconsistencies {"adapter": "caddyfile", "file": "Caddyfile", "line": 2}
2022/05/29 14:56:14.161 INFO admin admin endpoint started {"address": "tcp/localhost:2019", "enforce_origin": false, "origins": ["//localhost:2019", "//[::1]:2019", "//127.0.0.1:2019"]}
2022/05/29 14:56:14.161 INFO http server is listening only on the HTTPS port but has no TLS connection policies; adding one to enable TLS {"server_name": "srv1", "https_port": 443}
2022/05/29 14:56:14.161 INFO http enabling automatic HTTP->HTTPS redirects {"server_name": "srv1"}
2022/05/29 14:56:14.161 INFO tls.cache.maintenance started background certificate maintenance {"cache": "0xc000465e30"}
2022/05/29 14:56:14.161 INFO tls cleaning storage unit {"description": "FileStorage:/root/.local/share/caddy"}
2022/05/29 14:56:14.161 INFO http enabling automatic TLS certificate management {"domains": ["www.linuxas.gr"]}
2022/05/29 14:56:14.161 INFO autosaved config (load with --resume flag) {"file": "/root/.config/caddy/autosave.json"}
2022/05/29 14:56:14.161 INFO serving initial configuration
2022/05/29 14:56:14.161 INFO tls finished cleaning storage units
2022/05/29 14:56:14.161 INFO tls.obtain acquiring lock {"identifier": "www.linuxas.gr"}
2022/05/29 14:56:14.162 INFO tls.obtain lock acquired {"identifier": "www.linuxas.gr"}
2022/05/29 14:56:14.163 INFO tls.issuance.acme waiting on internal rate limiter {"identifiers": ["www.linuxas.gr"], "ca": "https://acme-v02.api.letsencrypt.org/directory", "account": "skokkineas@protonmail.com"}
2022/05/29 14:56:14.163 INFO tls.issuance.acme done waiting on internal rate limiter {"identifiers": ["www.linuxas.gr"], "ca": "https://acme-v02.api.letsencrypt.org/directory", "account": "skokkineas@protonmail.com"}
2022/05/29 14:56:15.514 INFO tls.issuance.acme.acme_client trying to solve challenge {"identifier": "www.linuxas.gr", "challenge_type": "tls-alpn-01", "ca": "https://acme-v02.api.letsencrypt.org/directory"}
2022/05/29 14:56:19.312 ERROR tls.issuance.acme.acme_client challenge failed {"identifier": "www.linuxas.gr", "challenge_type": "tls-alpn-01", "problem": {"type": "urn:ietf:params:acme:error:dns", "title": "", "detail": "DNS problem: SERVFAIL looking up A for www.linuxas.gr - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for www.linuxas.gr - the domain's nameservers may be malfunctioning", "instance": "", "subproblems": []}}
2022/05/29 14:56:19.312 ERROR tls.issuance.acme.acme_client validating authorization {"identifier": "www.linuxas.gr", "problem": {"type": "urn:ietf:params:acme:error:dns", "title": "", "detail": "DNS problem: SERVFAIL looking up A for www.linuxas.gr - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for www.linuxas.gr - the domain's nameservers may be malfunctioning", "instance": "", "subproblems": []}, "order": "https://acme-v02.api.letsencrypt.org/acme/order/563952596/92974220956", "attempt": 1, "max_attempts": 3}
2022/05/29 14:56:21.041 INFO tls.issuance.acme.acme_client trying to solve challenge {"identifier": "www.linuxas.gr", "challenge_type": "http-01", "ca": "https://acme-v02.api.letsencrypt.org/directory"}
2022/05/29 14:56:23.987 ERROR tls.issuance.acme.acme_client challenge failed {"identifier": "www.linuxas.gr", "challenge_type": "http-01", "problem": {"type": "urn:ietf:params:acme:error:dns", "title": "", "detail": "DNS problem: SERVFAIL looking up A for www.linuxas.gr - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for www.linuxas.gr - the domain's nameservers may be malfunctioning", "instance": "", "subproblems": []}}
2022/05/29 14:56:23.987 ERROR tls.issuance.acme.acme_client validating authorization {"identifier": "www.linuxas.gr", "problem": {"type": "urn:ietf:params:acme:error:dns", "title": "", "detail": "DNS problem: SERVFAIL looking up A for www.linuxas.gr - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for www.linuxas.gr - the domain's nameservers may be malfunctioning", "instance": "", "subproblems": []}, "order": "https://acme-v02.api.letsencrypt.org/acme/order/563952596/92974238516", "attempt": 2, "max_attempts": 3}
2022/05/29 14:56:23.987 ERROR tls.obtain could not get certificate from issuer {"identifier": "www.linuxas.gr", "issuer": "acme-v02.api.letsencrypt.org-directory", "error": "HTTP 400 urn:ietf:params:acme:error:dns - DNS problem: SERVFAIL looking up A for www.linuxas.gr - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for www.linuxas.gr - the domain's nameservers may be malfunctioning"}
2022/05/29 14:56:25.165 INFO tls.issuance.zerossl generated EAB credentials {"key_id": "3JBFRg5tcMEEtDxm2Mty2A"}