Obtaining certificate chain for sumac.org.uk, one moment while we download the sumac.org.uk certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for sumac.org.uk, one moment while we re-check the sumac.org.uk certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for sumac.org.uk failed
Sorry, the request for sumac.org.uk could not be completed...
We could not load the certificate for sumac.org.uk, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.