How to Configure the Recipient Policy for POP3 Users

This topic explains how to configure the recipient policy for POP3 users. This procedure applies to the scenario in which Exchange Server and Windows Server POP3 service coexist by using a single SMTP mail domain. This policy will assign a secondary proxy SMTP address of the shared SMTP mail domain so that Exchange Server can match your POP3 users to the shared SMTP domain. When the recipient update service runs, it assigns SMTP addresses to users, but it does not replace the primary SMTP address if it has been configured. Because the POP3 users already have a primary SMTP address, which corresponds to the POP3 domain, you need another recipient policy with the shared SMTP domain as a secondary proxy address so that the POP3 users are stamped with this address.

Before You Begin

Before you perform the procedures 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 POP3 users

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

2. In the console tree, expand Recipients, right-click Recipient Policies, point to New, and then click Recipient Policy.

3. In New Policy, select the E-Mail Addresses check box, and then click OK.

4. On the General tab, in the Name box, type an appropriate name, such as "POP User Addresses."

5. Under Filter rules, click Modify, and then create a filter to select only the POP3 users.

   Note

   The steps for creating a filter for your POP3 users assume that the POP3 users are the only users with external addresses. If this is not the case in your environment, you may need to modify the filter criteria.

   1. In Find Exchange Recipients, in Find, select Users, Contacts and Groups from the drop-down list.

   2. Click the Exchange tab.

   3. Click the Show Only Exchange recipients check box.

   4. Click the Users with External E-mail Addresses, and ensure no other check boxes are selected.

6. Click Find Now and ensure that the results return only your POP3 users.

   Note

   It is important that this policy applies only to your POP3 users. You do not want to alter the recipient policy for your Exchange Server users in this way.

7. Click OK.

8. On the E-mail Addresses (Policy) tab, the shared SMTP domain displays as the primary domain. In this example, the shared SMTP domain is @northwindtraders.com. You need to create a new address for your POP3 users and set this address as primary. Click New to create a new SMTP address.

9. In New E-mail Address, select SMTP, and then click OK.

10. In SMTP Address Properties, in the Address box, type the SMTP address space that of your POP3 domain, for example, pop.northwindtraders.com.

11. To make Exchange Server non-authoritative for this SMTP address, clear the This Exchange Organization is responsible for all mail delivery to this address check box.

    Configuring a non-authoritative domain

    

    Note

    Exchange Server must be configured as non-authoritative over the POP3 domain, so that it can forward any messages to the server running the Windows Server POP3 service.

12. In SMTP Address Properties, click OK.

13. On the E-mail Address Policy tab, select the new SMTP address that you just created (for example, @pop.northwindtraders.com), and then click Set as Primary. In this example, the new SMTP address is @pop.northwindtraders.com.

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

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

By configuring the recipient policy, the recipient update policy runs and now assigns the shared mail domain to all of the POP3 users. In this example, the shared mail domain is northwindtraders.com. Now when Exchange Server receives e-mail that is addressed to one of the POP3 users, it will recognize the northwindtraders.com address as a secondary address and send it to the target address of pop.northwindtraders.com.