Thanks in advance if anyone can guide me to complete this task.
We have two public DNS: "aaa.com" and a new "bbb.com" for company new business.
Currently only one MX record "mail.aaa.com" point to a public IP of our Exchange 2010 server.
Internally we only have one domain "aaa.com" and all company client computers and servers are within "aaa.com" domain.
Here is the task without changing internal domain structure:
1. Exchange server can receive incoming email to "firstname.lastname@example.org"
2. Add additional "bbb.com" email account to user's outlook 2007/2010. So each user will have "email@example.com" & "firstname.lastname@example.org" and they both can receive individual emal.
I am not Exhchange expert so please kindly help me. If you need further information please feel free and let me know.