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The Web Server is not sending the required intermediate certificate through a SECURE HTTPS Session

Some System admins forget to configure the intermediate Certificate and the SSL handshake between browser and Web Server returns ; Verify return code: 21 (unable to verify the first certificate) and not Verify return code: 0 (ok) # openssl s_client -connect http://www.vivodi.gr:443 -state New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 1024 bit SSL-Session: … Continue reading

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