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ExchangeMultipleDomains

Configuring Exchange to receive mail for multiple domains

How to configure an Exchange-based computer to receive mail for multiple domains?

By default, the relaying of unsolicited commercial e-mail in Exchange is not pre-configured. If mail for multiple domains is being accepted on an Exchange computer, then the Default Recipient Policy must contain all domains. To configure an Exchange computer to receive mail for multiple domains:

1. Start Exchange System Manager.
2. Click to expand the Recipients container.
3. Click Recipient Policies.
4. Open the properties of the appropriate policy that is displayed in the right pane.
5. Click the E-Mail Addresses tab, and then add any additional Simple Mail Transfer Protocol (SMTP) addresses that you want the # Exchange-based computer to host. For example, to add a new SMTP mail domain, follow these steps:
   • Click New, click to select SMTP Address, and click OK.
   • In the Address box, type the at sign (@) followed by the name of the SMTP domain.

1. Your new address space is now listed on the E-Mail Address tab. To enable your new address space, click to select the check box next to the address that you created, and then click OK.

Applies To

• Microsoft Exchange Server 2003 Enterprise Edition
• Microsoft Exchange Server 2003 Standard Edition
• Microsoft Exchange 2000 Server Standard Edition
• Microsoft Windows Small Business Server 2003 Premium Edition
• Microsoft Windows Small Business Server 2003 Standard Edition

Change the Primary Email Address in Exchange 2007

In Exchange 2007, you can not set the new email address as primary in the ordinarily way and the option for Set as Reply (which is the same as Set as primary option – is grayed out):

In order to change the default email address, you must first have to unmark the Automatically update e-mail addresses based on recipient policy (you will see that the Set as primary option – is no longer grayed out):

Notice: If you unmarked this option and you make changes in the email address policies (under the Hub transport role) - those changes will NOT take effect on this user:

Now, mark the new email address and click on the Set as primary option:

Important: After you have changed the default email address - it will not be changed automatically in the AD:

Change manually the primary email address in the AD:

This process of removing the Automatically update e-mail addresses based on recipient policy in order to change the default email address, is by design.

Referencing

Resources for IT Professionals - Retrieved on 1 Sept 2010

Petri IT Knowledge Base - Retrieved on 1 Sept 2010

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