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Add a second domain to Excahnge 2003?

Posted on 2012-12-28
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Last Modified: 2013-01-09
Hello - we have acquired another company, and wish to add their company's mail domain to our own Exchange server, and keep both domains separate, such that the Company B users still send/receive email from their old domain over our Excahnge system.  Is this possible? We are running Exchange 2003 on a Windows 2003 server, and have DNS provided through AT&T.  Thank you
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Question by:Damian_Gardner
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Expert Comment

by:cpmcomputers
ID: 38727476
Add the domains in the system manager under deafult recipient policy
email addresses

When adding the newco users in active directory take the tickbox off
"automatically update email addresses based on recipient policy"
on the email addresses tab and

Select the primary address for the user xyuser@newdomain.com you have added
and click the set as primary button
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Expert Comment

by:cpmcomputers
ID: 38727500
http://www.youtube.com/watch?v=SG9wKfGIAfM

This might explain it a liitle better
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Expert Comment

by:cpmcomputers
ID: 38727594
Sorry The article seems to have no sound

These links will probably explain it better

http://support.microsoft.com/kb/268838

http://www.outlookexchange.com/articles/jasonsherry/sherry_c19p1.asp
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Author Comment

by:Damian_Gardner
ID: 38727631
awesome - thanks and I'll look these over.  standby.

Damian
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Author Comment

by:Damian_Gardner
ID: 38731169
Ok - I think I'm ok so far (without testing email to the new users yet since MX record has not been changed yet for the new domain), and I've got my users added with the new domain as their primary set.  One thing I didn't expect was that the consultant who set our email policy up 5 years ago added another policy named after our company and set it's priority to be higher than the default policy.  So - what i did was at the new domain to BOTH policies.  Is that ok?

thanks
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Expert Comment

by:cpmcomputers
ID: 38732242
Hi it depends on which group of users he applied the policy to

If all users it should not be a problem (in which case it was probably not required because the default policy is modifiable anyway )

If a selected group make sure it does not apply settings that you are trying to achieve

Remember you can exempt individual users by removing the tick box on the email tab in active directory

Approximately how many users are involved
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Author Comment

by:Damian_Gardner
ID: 38732599
There are about 10 users from the new company that I've added.  total number of email users for the entire organization now is about 80.
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cpmcomputers earned 500 total points
ID: 38732637
Ok, So its no big deal if you needed to set them manually
And I suspect you do not.

Just make sure the 10 users have the correct primary domain email address set in AD and the tick box is unticked for "update addresses based on recipient policy"

otherwise the policy settings will unpick your selections

You should be good to go
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Author Closing Comment

by:Damian_Gardner
ID: 38759145
it's working good now.  thanks for yourt help./
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Expert Comment

by:cpmcomputers
ID: 38759154
Great - pleased to have assisted
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