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2 domains 1 exchange server

Posted on 2008-11-11
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Hello Experts


I have a Primary domain controller and a single exchange server. I have a new company starting up and would like to set up a new domain in a exsiting forest. Is there a way to set up the second domain in the same exchange server or do i have to have a different exchange server for the domain. i am going to be setting up a new exchange server for the new company but the will only be a mail box server.


thanks
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Question by:chrisglissman
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Expert Comment

by:Michael Worsham
ID: 22936660
Two Domains, one exchange server
http://www.petri.co.il/forums/showthread.php?t=5345

How to receive messages for two SMTP domains using Exchange Server 2003
http://support.microsoft.com/kb/289833

Exchange 2003 multiple domains
http://www.experts-exchange.com/Networking/Email_Groupware/Exchange_Server/Q_21208419.html
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Author Comment

by:chrisglissman
ID: 22936685
i woul dlike to add that the domains will be local ad domains like abc.local and dsc.local the primary dc  will bc abc.local and the second domain will be dsc.local. i will be setting up the new second dc in a exsiting forest of the primary dc.

Thanks
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Expert Comment

by:Malli Boppe
ID: 22936714
Do they really need a new domain in the existing forest can't they use the existing domain?
If you  need to have 2 domains in aforest and just one exchange server I think you need to have a trust setup between the 2 domains.
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by:chrisglissman
ID: 22936744
i have trust set up but i do not know how to set up the exchange server..
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by:Malli Boppe
ID: 22936777
once the trust is set up.make your exchange server to accept the email from both domains by adding the recipient policy and also asking your ISP to create MX records for the 2nd domains.
When you create the account in the 2nd domain choose mail box server as the exchange server in the first domain.
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Author Comment

by:chrisglissman
ID: 22936802
but if i have a new domain in a exsiting forest and i set up a user in that domain i cannot create a mailbox in the second domain becuse exchange does not see the new domain.

should i draw up a visio grpah so you can see what i am trying to build?
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by:sensored2008
ID: 22936885
question is  are both companies gonna  be  same site or  building, and  whether ou need all clients to access their from  mail  outlook (on  a local server) or you can have them accessing mail through owa.
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Author Comment

by:chrisglissman
ID: 22936912
yes both companis will be in the same building and yes they will access the mail from there outlook and webmail for exchange i want to have 1 exchange server and a second mail store if possible
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by:Malli Boppe
ID: 22936968
Steps for new setup:-

1) Build AD forest (ForestA)
2) Raise both Forests functional level to Windows 2003
3)Raise both Domain functional level to Windows 2003 ( you should not have any windows 2000 domain controllers, if you have then, raise the functional level to windows 2000 native.

4)Establish Two way forest trust with Forest B (which is account Forest where all user accounts will exist) and validate the trust from both sides.  
To validate more:- Create a folder in Forest A and give security rights to Forest B administrator.
5)Install Exchange 2003 and install the SP2.
6) Give Exchange admin privillages to ForestB administrator account by delegating admin rights to that user


User mailbox creation:-

1)Create an AD user account(John) in Forest B. In Forest A where you have Exchange, Create an AD user account (John) with the same name and create a Mailbox.
2) Disable the AD user(John) in Forest A(where  u have mailbox). After disabling, the mailbox doesnt have AD user account associated with.
3) Right click the Disabled account, select Exchange Tasks, select "Associate to external Account" and select the user(John from Forest B), click finish..

Now the mailbox can be accessible using Forest B, John's credentials.

http://forums.msexchange.org/m_1800483981/tm.htm 
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by:sensored2008
ID: 22936970
so no need  for  any new servers,  just  add their  username names in AD or their domain name in receipent  in exchange system manager
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by:sensored2008
ID: 22936991
doing what mboppe suggested is unnessacry  and it is  up to u do that  or not  since it the same building.  it really depends  what structure u want. but i would  suggest  that you  keep  the new server as either a active directory  replica or file  sever for the network, unless  you want to enforce different group  policies  for the other company than yours, which gonna  end up a headache later on  to keep control  of  both while you can just add both compaines members in seprate ou in the same  AD and apply the need poiclies  to each ou
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Author Comment

by:chrisglissman
ID: 22937036
this new business will have its own subnet and everthing i would just add a new ou to ad but i need the netbios name to be different on the new company. the higher up people do not want users to see the old company name when the log into the domain.
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by:sensored2008
ID: 22937082
then just create  a new AD  for them
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Author Comment

by:chrisglissman
ID: 22937089
i understand what you are saying but what i am asking is if i create a new ad domain for the new company. how do i set up my exsiting exchange server to create milboxes for the new domain? i want to have all dc in the same forest and have 1 exchange server doing all the work.
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Assisted Solution

by:Malli Boppe
Malli Boppe earned 200 total points
ID: 22937101
@Chris
You should have answered my previous question.
"Do they really need a new domain in the existing forest can't they use the existing domain?"
Do they really need to have a seperate subnet?
So you now want users to login as newdomain\username instead of oldcompanyname\username if thats what you want to achieve.
http://technet.microsoft.com/en-us/library/cc772007.aspx 
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by:sensored2008
ID: 22937150
follow mboppe  suggestion  then it  fits  ur  case  now  totally
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by:sensored2008
ID: 22937179
mboppe what i understood he needs to the new company not to see old  company naming, they might share exchange  server with each but kinda nothing  more than that
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Author Comment

by:chrisglissman
ID: 22937190
yes you are correct i need only to set up 1 exchange server but have 2 different dc's in the same forest i have other servers that will share like a app server and filestore but thats it. the exchange is the hard part. i only want to set up 1 exchange server and maybe down the road add a mailbox store as this server was to get full.
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Expert Comment

by:Malli Boppe
ID: 22944902
If thats the case I have already answered your question in the above comments.
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Assisted Solution

by:sensored2008
sensored2008 earned 1800 total points
ID: 22947638
I think  mboppe  meant this  part

Steps for new setup:-

1) Build AD forest (ForestA)
2) Raise both Forests functional level to Windows 2003
3)Raise both Domain functional level to Windows 2003 ( you should not have any windows 2000 domain controllers, if you have then, raise the functional level to windows 2000 native.

4)Establish Two way forest trust with Forest B (which is account Forest where all user accounts will exist) and validate the trust from both sides.  
To validate more:- Create a folder in Forest A and give security rights to Forest B administrator.
5)Install Exchange 2003 and install the SP2.
6) Give Exchange admin privillages to ForestB administrator account by delegating admin rights to that user


User mailbox creation:-

1)Create an AD user account(John) in Forest B. In Forest A where you have Exchange, Create an AD user account (John) with the same name and create a Mailbox.
2) Disable the AD user(John) in Forest A(where  u have mailbox). After disabling, the mailbox doesnt have AD user account associated with.
3) Right click the Disabled account, select Exchange Tasks, select "Associate to external Account" and select the user(John from Forest B), click finish..


and i guess he  deserve it all  cause it will  work for you
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Expert Comment

by:Malli Boppe
ID: 22955682
sensored2008 You are right .
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Accepted Solution

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chrisglissman earned 0 total points
ID: 22963639
thanks for the help guys. I will try this and award the points.
i will post if i have problems.


thanks
jon
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Author Comment

by:chrisglissman
ID: 24367560
meow
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