What’s the output of:
openssl x509 -in /etc/pki/tls/certs/localhost.crt -issuer -noout
or the results of the webpage https://crt.sh/?q=office.mydomain.com (for your domain)
BTW, I think you would also be interested in https://cipherli.st/ and:
What’s the output of:
openssl x509 -in /etc/pki/tls/certs/localhost.crt -issuer -noout
or the results of the webpage https://crt.sh/?q=office.mydomain.com (for your domain)
BTW, I think you would also be interested in https://cipherli.st/ and: