Dears
I am trying to use the free certificate generated from the third party cacert.com. When running hybrid configuration getting the below errors.
Error 1: Office 365 was unable to communicate with your on-premises Autodiscover endpoint. This is typically due to incorrect DNS or firewall configuration. The Office 365 tenant is currently configured to use the following URL for Autodiscover queries from the Office 365 tenant to the on-premises organization - https://autodiscover.domain.com/autodiscover/autodiscover.svc/WSSecurity.
Error 2: The Mailbox Replication Service could not connect to the remote server because the certificate is invalid. The call to 'https://mail.domain.com/EWS/mrsproxy.svc' failed. Error details: Could not establish trust relationship for the SSL/TLS secure channel with authority 'mail.domain.com'. --> The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. --> The remote certificate is invalid according to the validation procedure.. --> Could not establish trust relationship for the SSL/TLS secure channel with authority 'mail.domain.com'. --> The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. --> The remote certificate is invalid according to the validation procedure.
Anyone can help will be appreciated to resolve this issue without purchasing cert from Digicert or any other trusted authority.
Thanks in Advance
Muhammad Faheem