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AD Domain name change, email domain name change and OWA access

Hi folks,
I run a Windows 2003 domain with exchange 2003 and OWA
My company is changing it's name from e.g ABC to XYZ. I have 3 questions.
1. I would like my users to be able to continue to receive e-mails addressed to them at somebody@ABC.com, however I want them to be able to send/receive e-mails as somebody@XYZ.com i.e the new domain name. How do I configure this changeover  in exchange 2003.?
2. What should I do about the OWA, if users point their browsers at the old domain (exchange OWA address) will it automatically pick up both old and new e-mail addresses.?
3.My users currently logon to ABC as their domain. Do I need to change this to XYZ and how?

Thank you very much  
1 Solution
Don't even think about changing the Active Directory domain. While it is technically supported, it usually breaks Exchange.
For an email change, simply add the new domain to recipient policy and make it the default. Do not remove the existing domain from recipient policy. That will allow the old email address to continue to work.
For OWA access, it is simply DNS. Exchange doesn't care what you are using for the host name. Therefore you could simply configure the new address and point it at the same IP address. The only problem comes with an SSL certificate, which you would need to get issued on the new domain.


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