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Two seperate Domains

Posted on 2004-03-25
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Last Modified: 2010-05-18
Dear experts,

I have a complicated question and I am hoping someone my be able to start me in the correct direction.

I have two companies each with their own Domains.  You can call one the parent company and one the child company.  The parent is running on exchange right now and that is the bulk of the company employees.  The child is small and is as far as the public is concerned a seperate company.  Up to now I have kept them completely seperate, outsourcing the email function for the child.  These individuals are moving into our building and I want to include them in the exchange system.  They will need to keep there seperate domain as far as the outside world is concerned but participate like everyone else on the inside.

I could use any advise here.  I am in need of the issues I am going to run into and possible resources to complete the project.

I appreciate the help.

Reg

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Question by:ReggieM
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Expert Comment

by:OneHump
ID: 10682456
Very easy.  You create recipient policies that assign seperate smtp proxy addresses to each company's user depending on defined attributes. It could be an attribute like "company" or an extensionattribute.  

Let me know if you need more info there.

Also, if you want to partition your GAL so each company only sees that company's recipients, let me know and I'll show you how to do that.  :)

OneHump
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Author Comment

by:ReggieM
ID: 10686384
OneHump,

Thank you very much for the information.  I am new at Exchange 2000, could you give me more detail or lead me to the information that steps you through what you are expressing.

Thanks

Reggie
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OneHump earned 2000 total points
ID: 10688336
Sure, sorry for the delay.  I had a problem with Yahoo and it's spam control.  :)

I'm going to assume that you simply want to show different addresses to external recipients and that both companies will be visible to each other in the address list.

The first thing you need to do is identify accounts from each company.  Each company's accounts will require a unique attribute.  For example, you can specify a unique value in the "company" field.  That is in the "Organization" tab of AD Users and Computers.

Once you have done that, you will need one recipient policy for each company.  In Exchange System Manager, go to "Recpients" under your "Organization" node.  Click recipient policies.  You should already have a policy there.  Right click on it and select properties.  You'll see a filter rule.  It looks scary, but it's merely an LDAP query built from selecting values from a menu on other tabs.  Before messing with this recipient policy, it is best to create a new one and test there, so close out of this window.

-Right-click on recipient policies and select New -> Recipient Policy.

-Put a check mark next to "Email Addresses" and click OK.  

-Name your policy something like "Company 1 Name".  It doent matter what you put there.    

-Now click modify.  I'm going to assume you are keying in on company name.  

-Uncheck everything except "Users with Exchange Mailbox" and then click Advanced.  

-Click the "Field" button and select "User" and then "Company".  

-Change condition to "Is (Excactly)" and type the company name you specified on the user accounts in value.  

-Click Add.  

-Click. OK.  

-Now go to The "Email Addresses (Policy) tab.  

-Select SMTP and "Edit".  

-Type the address you want this company to have in the "Address" field in the formart "@company.domain".  

-If you this Exchange org is the only place email addressed to this domain will go, check the check box there that says so.  

-Click OK.  

-Make sure there is a check next to SMTP and click OK.  

-It will probably ask you if you want to apply this policy to existing recipients.

-You probably do.  Repeat these steps for the other domain.  

-You can then check your default policy.

-If all of the addresses listed there are covered by your new policies, you can delete it.

OneHump

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Expert Comment

by:OneHump
ID: 10815329
Where are we at with this?

OneHump
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