[Samba] NT4 & Exchange 5.5 running with Samba 4.5 AD

Andrew Bartlett abartlet at samba.org
Fri Aug 19 09:31:01 UTC 2016

On Mon, 2016-08-15 at 15:13 -0400, Sonic via samba wrote:
> File under blast from the past...
> Any known reason that an NT4 domain member of a Samba 3 PDC running
> Exchange 5.5 would have issues if the PDC is migrated to a 4.5 AD?
> I know that early MS AD's supported NT4 and Exchange 5.5. but I'm not
> sure about current Samba AD releases. The only caveat I can think of
> is that apparently (not 100% sure of this) the nmbd process that runs
> in AD mode doesn't support WINS or NetBIOS browsing in the way
> necessary for the older combination. But that can be worked around by
> using a Samba 4x file server as an AD member and have it run nmbd
> with
> WINS support.
> Any input is appreciated.

You may need to set a number of smb.conf options before the NT4 server
will talk to a modern Samba, due to old crypto.  Look in 'man smb.conf'
and the release notes, specifically around 'badlock'.

Andrew Bartlett

Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba

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