[Samba] Samba 4 AD Authentication Errors

[Tobias Reese]

Hi,

I have a setup containing an old windows 2003 ad server which i am planning
to replace with 2 samba 4 dc's. Replication between these 3 servers is
working fine. Sometimes i am not able to login to windows workstations and
bind shares with net. Due to the fact that everything is going back to
normal once i stop the samba service on the 2 samba 4 machines it looks
like these machines do not answer authentication requests correctly. Do you
have any pointer where i should look into? Try to find anythins in the logs
but haven't found anything yet. Also google was not that helpful.

The only thing i have till now is that the net command throws "system error
86" -> network password is wrong (translated from german, so the english
error message might look slighly diffrent). Windows logon only state
username and or password is wrong.

Samba version is 4.2.9 Sernet
Debian Wheezy

Best regards,
Tobias