samba - Jun 2010 - SAMBA PDC LOGIN - UPN (user@realm) to DOM\USER

I have looked and looked but have not been able to find out how to allow 
UPN authentication to be processed by a Samba PDC?  Is it possible to 
strip the "@domain" from the user before authentication at samba or
map
the UPN user to a dom\username for authentication?

Thanks,
Andrew

LOGS

/var/log/samba/log.user:  SAM Logon (Interactive). Domain:[domain].  
User:[user at domain@XENDESKTOP1] Requested Domain:[domain]
/var/log/samba/log.user:  check_ntlm_password:  Checking password for 
unmapped user [domain]\[user at domain]@[XENDESKTOP1] with the new password 
interface
/var/log/samba/log.user:  check_ntlm_password:  mapped user is: 
[domain]\[user at domain]@[XENDESKTOP1]
/var/log/samba/log.user:  check_sam_security: Couldn't find user 
'user at domain' in passdb.
/var/log/samba/log.user:  check_ntlm_password:  Authentication for user 
[user at domain] -> [user at domain] FAILED with error NT_STATUS_NO_SUCH_USER

>
> --- Original message ---
> Subject: [Samba] SAMBA PDC LOGIN - UPN (user at realm) to DOM\USER
> From: Andrew Grimmett <agrimmett at lssidata.com>
> To: <samba at lists.samba.org>
> Date: Tuesday, 15/06/2010  7:01 AM
>
>
> I have looked and looked but have not been able to find out how to 
> allow
> UPN authentication to be processed by a Samba PDC?  Is it possible to
> strip the "@domain" from the user before authentication at samba
or
> map
> the UPN user to a dom\username for authentication?
Are you certain Xen's NTLM Auth is not adding this?
>
>
>
> Thanks,
> Andrew
>
> LOGS
>
> /var/log/samba/log.user:  SAM Logon (Interactive). Domain:[domain].
> User:[user at domain@XENDESKTOP1] Requested Domain:[domain]
> /var/log/samba/log.user:  check_ntlm_password:  Checking password for
> unmapped user [domain]\[user at domain]@[XENDESKTOP1] with the new 
> password
> interface
> /var/log/samba/log.user:  check_ntlm_password:  mapped user is:
> [domain]\[user at domain]@[XENDESKTOP1]
> /var/log/samba/log.user:  check_sam_security: Couldn't find user
> 'user at domain' in passdb.
> /var/log/samba/log.user:  check_ntlm_password:  Authentication for 
> user
> [user at domain] -> [user at domain] FAILED with error 
> NT_STATUS_NO_SUCH_USER
>
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