Exchange CA recovery

i lost one of my CA 2013 servers

installed  new server with same name and config upon unning Setup /m:RecoverServer /IAcceptExchangeServerLicenseTerms

but getting this message

e:\>Setup /m:RecoverServer /IAcceptExchangeServerLicenseTerms

Welcome to Microsoft Exchange Server 2013 Unattended Setup
Copying Files...
File copy complete. Setup will now collect additional information needed for
installation.
Languages
Management tools
Client Access role: Client Access Front End service
Client Access role: Front End Transport service

Performing Microsoft Exchange Server Prerequisite Check

    Configuring Prerequisites                                 COMPLETED
    Prerequisite Analysis                                     FAILED
    Exchange Server version Version 15.0 (Build 995.29) or later must be used t
o perform a recovery of this server.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150
)/ms.exch.setupreadiness.DrMinVersionCheck.aspx


The Exchange Server setup operation didn't complete. More details can be found
in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder.

Our environment has Exchange 2013 On-line with CU6