Hello there,

> I have a server certificate signed by a local CA company and the root
> certificate that signed it  expires very soon. The CA company gave us a
> new root certificate but with the new root certificate OpenSSL is no
> longer able to successfully verify the server certificate.
> 
> The working chain is: trust.pem --- a-sign.pem --- server.pem
> 
> The no longer working chain is: trust_new.pem --- a-sign.pem --- server.pem

> It looks like OpenSSL does not recognize trust_new.pem as the signer of
> a-sign.pem but the question is why? Trust_new.pem looks - at least for
> me - pretty like trust.pem except the changed validity dates and the
> signature.

You can not just replace the trust.pem with trust_new.pem as the new
root ca cert (trust_new.pem) did not sign the sub ca cert (a-sign.pem)
and so the chain is broken. They need to give you a new ca cert and
server cert.

Chris...
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