I’m using Exchange 2019 (on-premise), I want to run this cmdlet to view the junklist of a user:

Get-MailboxJunkEmailConfiguration -Identity “user mailbox”

but here is the output:

Get-MailboxJunkEmailConfiguration : The term ‘Get-MailboxJunkEmailConfiguration’ is not recognized as the name of a
cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify
that the path is correct and try again.
At line:1 char:1

• Get-MailboxJunkEmailConfiguration

•   + CategoryInfo          : ObjectNotFound: (Get-MailboxJunkEmailConfiguration:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  

I searched a lot but I didn’t find anyhing related. what is wrong?