Add a secondary domain to your organization

Here are the steps for creating two SMTP entries.

There could be several reasons for employee e-mail address changes--Companies acquire one another and some change their names. No matter the reason, upper management will probably want the e-mail addresses for company employees to reflect the actual name of the company today. You, as the e-mail administrator, know that these kinds of changes don't take place overnight. You need to allot time to allow e-mail to be delivered to users at both their old and their new e-mail addresses, but at the same time, you don’t want users to have to check multiple mailboxes for new mail.

Fortunately, Exchange has an easy solution for you. Here are the steps for creating two SMTP entries:

1. Open the Exchange System Manager.
2. Go to Recipients > Recipient Policy.
3. In the right-hand pane, right-click the Default Policy and choose Properties from the shortcut menu.
4. Select the "E-mail Addresses (Policy)" tab.
5. Click the New button.
6. From the New E-mail Address window, choose "SMTP Address".
7. On the SMTP Address Properties window, in the Address box, enter your new domain preceded by an at (@) sign.
8. Click OK.
9. Enable the new mail address by selecting the checkbox next to the new address.
10. Back on the main ESM window, right-click the Policy and choose "Apply this policy now".

Now, when you look at the details for a user, you will see two SMTP entries.