Ho verificato che la CA principale AddTrust External CA Root
sia installata nell'archivio certificati di Windows 10. In quale altro modo posso risolvere questo problema dal punto di vista del cliente?
$ openssl s_client -connect service.electrostub.com:443 -tls1_2
depth=2 C = GB, ST = Greater Manchester, L = Salford,
O = COMODO CA Limited, CN = COMODO RSA Certification Authority
verify error:num=20:unable to get local issuer certificate
verify return:0
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Certificate chain
0 s:/OU=Domain Control Validated/OU=PositiveSSL Wildcard/CN=*.electrostub.com
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA
Domain Validation Secure Server CA
1 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA
Domain Validation Secure Server CA
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Certification Authority
2 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Certification Authority
i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root