[Samba] Naming conventions with samba4 & AD with computer with "_"

[L.P.H. van Belle]

Hai, 

About the underscore ...  

Think in android phones, default names, lots have _ in the name.

And if you use Bind9 DLZ, add also : 
check-names ignore; 

I think its good to add this to the bind_dlz samba wiki.


Greetz, 

Louis




> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Rowland Penny via
> samba
> Verzonden: maandag 17 oktober 2016 9:39
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] Naming conventions with samba4 & AD with computer
> with "_"
> 
> On Sun, 16 Oct 2016 21:59:30 +0200
> Trenta sis via samba <samba at lists.samba.org> wrote:
> 
> > Hi,
> >
> > I am testing to migrate samba 3 nt domain to samba 4 ad, It is sure
> > to keep machines with hostname "_" and dns records a or cname with "_"
> >
> > I am reading some information, but nothing clear if we can keep this
> > old convention....
> >
> > We have made some test and seems that any problem is generated, but
> > we are not sure  if we can continue with this naming convention...
> > thanks
> >
> > 2016-10-10 19:25 GMT+02:00 Trenta sis <trenta.sis at gmail.com>:
> >
> > > Hi,
> > >
> > > I'm evaluating to migrate samba 3 domain to samba 4 with AD, but our
> > > environment contains dns names with "_", and in samba wiki appears
> > > https://support.microsoft.com/en-us/kb/909264 that you can't use dns
> > > names with "_"
> > >
> > > Disallowed charactersDNS host names cannot contain the following
> > > characters:
> > >
> > >    - comma (,)
> > >    - tilde (~)
> > >    - colon (:)
> > >    - exclamation point (!)
> > >    - at sign (@)
> > >    - number sign (#)
> > >    - dollar sign ($)
> > >    - percent (%)
> > >    - caret (^)
> > >    - ampersand (&)
> > >    - apostrophe (')
> > >    - period (.)
> > >    - parentheses (())
> > >    - braces ({})
> > >    - *underscore (_)*
> > >    - white space (blank)
> > >
> > > The underscore has a special role, as it is permitted for the first
> > > character in SRV records by RFC definition, but newer DNS servers
> > > may also allow it anywhere in a name. For more details, see:
> > > http://technet.microsoft.com/en-us/library/cc959336.aspx.
> > > I have tested samba 3 to samba 4 and seems that computer objectes
> > > with "_" are migrated and we can add dns A with "_"
> > >
> > >
> > > I have tried to add a cname with "_" and seems thats wokrs, but I'm
> > > not sure If really I can user "_" in computer names and dns names
> > > or this requires to be replaces by "-" befores upgrade...
> > >
> > >
> > > It is required to rename machiens with "_" and dns A and cname with
> > > "_" to "-", for example... ?
> > >
> > > Thanks
> > >
> > >
> 
> If you read the documentation you posted links to, yes, you can use the
> underscore character, but it is not recommended, as other dns servers
> might not recognise it.
> 
> This might not be a problem now, but what if something changes in the
> future ?
> 
> I would accept this and start changing things now.
> 
> Rowland
> 
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