To complete TLS setup, do all of the following: (1) Create a new certificate using the New-ExchangeCertificate cmdlet (2) ...

To complete TLS setup, do all of the following: (1) Create a new certificate using the New-ExchangeCertificate cmdlet (2) Associate this certificate with the server using the Enable-ExchangeCertificate cmdlet (3) For self-signed certificates, copy this certificate to the UM IP gateway and  correctly import it. For CA-signed certificates, correctly import the CA certificate to the UM IP gateway.