[Samba] DNS issues after upgrade

[Anantha Raghava]

Hi,

Last evening we upgraded one of our 4 Domain Controllers from 4.6.5 to 
4.7.1 and all of a sudden the DNS resolution issue started. We are using 
BIND9_DLZ back end.

This server we had upgraded has all 7 FSMO Roles. Some time back we 
upgraded the other 3 servers from version 4.6.5 to 4.7.1 and there was 
no issue at all.

I have also observed a very peculiar behaviour that is all of a sudden, 
eventhough samba service is running, the Windows RSAT shows the servers 
as down and again, we doing nothing, it comes up.

We are not seeing any peculiar error message either in samba logs or 
named logs.

Could someone guide us forward?

-- 

Thanks & Regards,


Anantha Raghava


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