How to Configure the Recipient Policy for the Shared SMTP Mail Domain for Exchange Users

This topic explains how to configure the recipient policy for the shared SMTP mail domain for Exchange Server users. This SMTP address should be set as primary for all your Exchange Server users, and Exchange Server should be authoritative over this domain. When Exchange Server is authoritative over the domain, it assumes responsibility for delivering the message and returns a delivery status notification if it cannot find a recipient in Active Directory directory service.

Before You Begin

Before you perform the procedure in this topic, confirm the following conditions exist:

• You have read Scenarios for Coexistence of the POP3 Service in Exchange Server 2003 and Windows Server 2003.

• You have performed the steps in the following procedure:

  • How to Configure Exchange and Windows Server POP3 Service to Coexist Using a Single SMTP Mail Domain

Procedure

To configure the recipient policy for the shared SMTP mail domain for Exchange Server users

1. Click Start, point to All Programs, point to Microsoft Exchange, and then click System Manager.

2. In the console tree, expand Recipients, and then click Recipient Policies.

3. In the details pane, right-click the recipient policy applied to your users, and then click Properties.

4. Click the E-Mail Addresses (Policy) tab, and then verify that the SMTP address that you want to share is configured as the primary SMTP address. The primary SMTP address appears in bold. In this example, the primary SMTP address is northwindtraders.com.

   **Primary SMTP Address of @northwindtraders.com**

   

5. Select one of the following options:

   • If the SMTP address appears in bold, it is set as the primary SMTP address. Proceed to the next step.

   • If the SMTP address does not appear in bold, select the SMTP address, and then click Set as Primary.

6. Click the SMTP address space that you want to share, and then click Edit. In this example, the SMTP address space to be shared is northwindtraders.com.

7. To ensure that Exchange Server is authoritative for this SMTP address, verify that the This Exchange Organization is responsible for all mail delivery to this address check box is selected. If it is not, select it, and then click Apply.

   Verifying an authoritative domain

   

8. A message displays asking if you want to update all corresponding recipient e-mail addresses. Click Yes.

9. On the E-mail Addresses (Policy) tab, click OK.

Changing the recipient policy in this way causes Exchange Server to use the new primary address as the return or reply-to address in outgoing e-mails for your Exchange Server users. In this example, all Exchange Server users in this policy now have a return e-mail address that matches the new primary address space of @northwindtraders.com.