I'm getting this error:
"The certificate is invalid!
error:21075075:PKCS7 routines:PKCS7_verify:certificate verify error"
Do you have an example of smime_root_cert_location parameter in config.php file?
I'm in Brazil and I think I need to include ICP-B root certificates for verification work, but I don't know how to do that.
I already tried to download http://acraiz.icpbrasil.gov.br/ICP-Brasilv3.crt
and specified this file in smime_root_cert_location but didn't work.
And another question: Is it possible to include multiple root files?
Thank you in advance.