>Hopefully the microsoft domain is a name that is not availible on the 
>internet, like mymsdomain.local. Then your microsoft server is known as 
>domaincontroller.mymsdomain.local.
Of course !


>In that case you would setup a forwarder in BIND for mymsdomain.local that 
>points to the microsoft dns servers.

Ok, but I'd like understanding if:
1- for every query to BIND there is always a forwarding to microsoft dns 
servers or if there is only a forwarding for queries containing 
'mymsdomain.local' domain ?
2- If I configure BIND how you suggest me, can I not permit Internet queries 
for ''mymsdomain.local' ?
3- Can you show me sample example of forwarding configure file for specific 
domain, please ?



  ----- Original Message ----- 
  From: Lyle Giese 
  To: Riccardo Castellani 
  Sent: Tuesday, December 28, 2010 11:12 PM
  Subject: Re: to route specific dns query to specific dns server


  Riccardo Castellani wrote: 
    I'm using Bind9 for my name server (SERVER EXT) and to give name resolution 
for who access from Internet to my domain (e.g. to access to my Web site or to 
write to my email addresses). 
    My domain is example.com:

    www.Example.com
    test.h...@example.com

    This dns server maps only my pubblic addresses.
    This server has 2 nics: internal + external ip address. 
    Some internal servers, as proxy or mail servers, send dns requests to this 
dns server to solve names.
    I have also internal MS domain (dns server is SERVER INT)  which is 
different from the other, it's created by Domain Controllers + AD 
(activedirectory.com) and it's used to map machines into internal network.

    Now I my email server or proxy server (which are in internal network) need 
to synchronize time so they have to use my internal NTP server; these Linux 
machines use 'SERVER EXT' in /etc/resolv.conf, so how I can indicate to send 
request for specific internal name (ntp.activedirectory.com) to dns server INT ?
    I could insert it inot /etc/hosts but it's not dnssssss service !!!


  Hopefully the microsoft domain is a name that is not availible on the 
internet, like mymsdomain.local.  Then your microsoft server is known as 
domaincontroller.mymsdomain.local.  

  In that case you would setup a forwarder in BIND for mymsdomain.local that 
points to the microsoft dns servers.  Then when the linux boxes want 
domaincontroller.mymsdomain.local, your Bind name server will ask the microsoft 
dns servers for the answer.

  Lyle Giese
  LCR Computer Services, Inc.
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