I'm running Suse 10 with
Samba(samba-3.0.20b-3.1)+Winbind+Kerberos(krb5-1.4.1-5). Domain authentication
with PAM is working perfectly and I can log in via ssh, local console or use
samba shares all with domain accounts.
 
Sudo (sudo-1.6.8p9-2)doesn't recognise the domain account Administrator but
recognises all other users in the domain admins group. I have added the
following line to /etc/sudoers:

%domain\ admins ALL=(ALL) ALL

This works for all other users that appear in the "domain admins" group when I
do `getent group`. When logged on as administrator on this machine, I do `sudo
su` (this works with all other domain admins) but I get:

administrator is not in the sudoers file.  This incident will be reported.

Doing getent passwd or getent group shows the account as Administrator with a
capital A. Although I have logged in as both Administrator@hostname and
administrator@hostname I get the same result with both (with lowercase
administrator in the error).

All other aspects of Domain Authentication are working perfectly otherwise.