[Samba] AD member server, some users suddenly can only connect to shares via ip address

[Rowland Penny]

On Thu, 25 Apr 2019 13:00:37 +0200
Neil Price via samba <samba at lists.samba.org> wrote:

> I've got some 4.6.5 member servers (debian stretch) that have been 
> running flawlessly for many months. Suddenly a few users get a
> password prompt when connecting to shares. But they can connect with
> the ip address. (windows 7 and 10 clients). This happened on all of
> the member servers at the same time.
> 
> The chances of getting the password prompt seem to increase if you
> are on a different subnet, especially a remote one (WAN connection).
> There are no firewalls between the subnets.
> 
> The key error seems to be this

No, the key error is that dns doesn't seem to be working, if you can
connect via ipaddress, then you are not using kerberos.

I would peer very closely at the dns servers and configuration.

Rowland