I am running Exchange Server 2019 at home which is my lab for learning and testing. I am using 3rd party SSL Certificate from SSL2BUY (Comodo). This certificate will expire on 3rd May 2020. I am planning to try Let’s Encrypt and get the certificate for Exchange Server 2019.
My Question is - Can, I try Let’s Encrypt ACME v22.214.171.1243 and request new certificate before 3rd May 2020? Currently, I will be using these names - mail.ramlan.ca, ramlan.ca, autodiscover.ramlan.ca during certificate request for services IMAP, POP, SMTP, IIS.
Other details - Domain ramlan.ca and it is with GoDaddy
All virtual directory have been created in Exchange Server 2019
All mail (In and Out) is working currently using 3rd Party SSL certificate
Appreciate your response.