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I am new to Curl and Cacerts world and facing a problem while connecting to a server. Basically, I need to test connectivity over https from one machine to another machine. I have a URL to which I need to connect from Machine A (a linux machine) I tried this on command prompt cmd> curl https://[my domain or IP address] and got the following: curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed On going through some articles over internet I did this: openssl s_client -connect <domain name or Ip address>:443 and got some response including the server certificate (inside -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- ). What should I do next from here. I think, I will have to just copy paste the text inside BEGIN CERTIFICATE & END CERTIFICATE and save it in a file. But, What type of file it should be? .pem , .crt ?.. What should I be do after that? I tried this - copied the text inside BEGIN CERTIFICATE & END CERTIFICATE and saved it in a .crt file - named it as my-ca.crt (also tried the same thing by naming it as my-ca.pem file) and then did this: cmd>curl --cacert my-ca.crt https://[my domain or IP address] But got the same error.

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