Server 2012 Print Server and DNS CNAME - setspn advice

Hi,
I am building a new Server 2012 Print server. What I would like to do is utilise a DNS CNAME when I deploy the printer, rather than its host name.
I have used 'setspn' to accomplish this, running the following command:
setspn -A HOST/<ALIAS> <hostname>
Now when I browse the alias I can see the installed printer. The problem I have is when I then deploy this via Group Policy it uses the servers host name instead, but it does work. If I manually edit
the GPO to reflect the alias name instead it does not deploy the printer. Moreover the indication on the 2012 server has gone so it does not see that it has any printers deployed.
When I browse the computers host name and try to manually install the printer it will state that it is downloading the drivers but never seems to complete. If I browse it's alias and try the same
thing I receive an error stating that it couldn't connect to the printer. The client machine in this instance is Windows 7 SP1 x64.
What am I doing wrong? Any help would be greatly appreciated.
Howard

I've been struggling with the same problem, for a Windows 2012 R2 print server.
I've added SPN entries and registry tweaks (OptionalHostnames, DisableStrictNameChecking, DnsOnWire etc.), but still couldn't connect printers using the alias, even though I could browse shares on the server, using the alias.
While not explicitly covering 2012 R2, this KB article helped me:
KB2546625.
Adding the alias to the local hosts file solved it for me.
Now, I wanted to be sure that I wasn't applying a bunch of unnecessary tweaks, so I went ahead and removed all registry tweaks (including DnsOnWire mentioned in the KB article), the SPN entry for the alias and rebooted - it still works!
In my case, maybe on Windows Server 2012 R2 in general, all that was needed was to add the alias in the local hosts file.

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