1. Remote to MOPTHYBRID server and run EMS by admini. as show below.
2. create a CSR by command
New-ExchangeCertificate -PrivateKeyExportable $True -GenerateRequest -FriendlyName "Wildcardcer2025" -SubjectName "c=AU,o=Melbourne and Olympic Park,cn=mail.mopt.vic.gov.au" -DomainName mail.mopt.vic.gov.au
3. Complete CSR by the following command, and download a copy of the certificate by refer to the guide "Request a certicicate from DigiCert"
Import-ExchangeCertificate -FileData ([System.IO.File]::ReadAllBytes('C:\Users\dli_admin\Desktop\Certificate\Wildcardcer2025.cer'))
4. Check certificate status by
Get-ExchangeCertificate | where {$_.Status -eq "Valid" -and $_.IsSelfSigned -eq $false} | Format-List FriendlyName,Subject,CertificateDomains,Thumbprint
5. Blind certificate by log in to exchange admin center https://mail.mopt.vic.gov.au/ecp, follow the three steps of hte following image and completed the process.