Add a second domain to Excahnge 2003?

Damian Gardner
Damian Gardner used Ask the Experts™
on
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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cpmcomputersManaging Director

Commented:
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
cpmcomputersManaging Director

Commented:
http://www.youtube.com/watch?v=SG9wKfGIAfM

This might explain it a liitle better
cpmcomputersManaging Director

Commented:
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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Damian GardnerIT Admin

Author

Commented:
awesome - thanks and I'll look these over.  standby.

Damian
Damian GardnerIT Admin

Author

Commented:
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
cpmcomputersManaging Director

Commented:
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
Damian GardnerIT Admin

Author

Commented:
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.
Managing Director
Commented:
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
Damian GardnerIT Admin

Author

Commented:
it's working good now.  thanks for yourt help./
cpmcomputersManaging Director

Commented:
Great - pleased to have assisted

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