[Samba] problem authenticating users to Active Directory after Ubuntu 12.04 -> 14.04 upgrade

[steve]

On Fri, 2014-04-25 at 19:58 +0100, Rowland Penny wrote:

Hi
We've been trying to reproduce the OP's login failure. The nearest we
can get is by replacing Rowland's:
> 
> Edited /etc/krb5.conf to match the following:
> 
> [libdefaults]
>      default_realm = DOMAIN.COM
>          dns_lookup_realm = false
>          dns_lookup_kdc = true

with the OP's krb5.conf However, it's not a faithful reproduction as
this is a simple Lubuntu domain member not running smbd. Please also
note that unlike the OP, we also lose the ability to kinit domain users.
HTH to narrow it down a little.
Steve