Hello, attached is the certificate and its chain of https://revoked.grc.com/ doing this: openssl ocsp -no_nonce -issuer chain.pem -cert cert.pem -text -url http://ocsp2.globalsign.com/gsdomainvalg2 goves the following: OCSP Request Data: Version: 1 (0x0) Requestor List: Certificate ID: Hash Algorithm: sha1 Issuer Name Hash: 45658DA20174402FF48B3A6AC0BC69208095C7CA Issuer Key Hash: 96ADFAB05BB983642A76C21C8A69DA42DCFEFD28 Serial Number: 112155688D380775DA34C5DF97433ED3F6A7 Error querying OCSP responsder 139928584042312:error:27076072:OCSP routines:PARSE_HTTP_LINE1:server response error:ocsp_ht.c:250:Code=403,Reason=Forbidden where is the problem for this strange error? I'm running CentOS 6.7 64-bit, and OpenSSL is the latest provided update from repository; Thanks; Greetings, Walter -------------- next part -------------- A non-text attachment was scrubbed... Name: cert.pem Type: application/octet-stream Size: 1798 bytes Desc: not available URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20151005/55428823/attachment.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: chain.pem Type: application/octet-stream Size: 2878 bytes Desc: not available URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20151005/55428823/attachment-0001.obj>