Company name change/e-mail switchover

[meandphp]

Hello Folks,
we have a domain name and host our e-mails on an exchange server 2003. But our company is changing it's name to something else whic will mean a change in domain name and consequently e-mail address. We could not possibly inform all our customers of the new e-mail address and even if we could, some customers will still send messages to the old e-mail addresses. How do I manage this switch over? Do I have two exchange servers running sisde by side and gradually withdrawing the old domain? Do I create another domain and set up forwarding? How do I make sure all our future e-mails after the name change only carry the new domain name though the messgas could have been recieved using the old name.
I know there must be a way but I just can't figure out how to do it.
Thank you

[andyf]

you can do it all you have to do is :
Set mail forwarders for your old e-mail accounts to forward to your new mail ids...

[meandphp]

Hi There,
Thank you for your answer. Is setting yhe forwarder something I can do once for the whole site or do I have to set it on each individual mailbox?
Thanks

[Paul]

I never before suggested another forum but I don't know that you will find the right expertise here for your question as this is mostly a web development and design board. I have messed around with exchange quite a bit but I am not familiar enough with it to give you a good anwser. However, I have found the following place useful for exchange server questions:

http://forums.msexchange.org/

[afterburn]

Sorry i didn't see this question sooner, the answer is the add the new domain to the acceptance list of domains. It will ask to assign the email address in the same format of the user name using the new domain. Then you create a SMTP Sink to auto-reply about the new domain.