Jun 30 2021 06:24 AM
Jun 30 2021 05:45 PM
From your picture, it looks like your CSR might not have been correct, or your certificate wasn't correctly installed, as I do not see your Exchange Virtual Directory URL under the name (Figure A).
I understand the steps you have taken; you purchase a domain; let say for this example, it is contoso.com, and your exchange server virtual directory URLs are exchange.contoso.com. You created a Certificate Sign Request (CSR) for exchange.contoso.com and submitted that request to a certificate authority. Once you received your certificate, your complete a pending certificate request. Which then, you are assign services to that certificate.
The following posting show how to installed and configured certificates. https://docs.microsoft.com/en-us/exchange/architecture/client-access/certificate-procedures?view=exc...