RDS 2012R2 'remoteapp publisher cannot be identified'

RDS allows you to change the published name of your server to match the installed certificate, this is useful when you use "split-brain" DNS (domain.local) internally.

The PowerShell command to use is:
Set-RDSessionCollectionConfiguration –CollectionName QuickSessionCollection -CustomRdpProperty "use redirection server name:i:1 `n alternate full address:s:host.example.co.uk"