How to Configure a POP3 Client Computer to Use Exchange as the SMTP Server

This topic explains how to configure a POP3 client computer to use Exchange Server as its SMTP server.

Optionally, you can configure your POP3 clients to use Exchange Server as their SMTP server. In this configuration, the Windows Server POP3 service allows POP3 users to retrieve their e-mail, while the SMTP service in Exchange Server allows them to send e-mail. Configuring your POP3 clients to use Exchange Server as their outgoing server offers the benefit having a single system through which outgoing e-mail flows. However, you can configure your POP3 service to use the SMTP service in Windows if you desire.

The following procedure shows you how to configure an SMTP server on a Microsoft Outlook Express client. On different mail clients, these steps may vary.

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 one of the following procedures:

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

  • How to Configure Exchange and Windows Server POP3 Service to Coexist Using Different SMTP Mail Domains

Procedure

To configure a POP3 client computer to use Exchange Server as the SMTP server

1. On the client computer, open Outlook Express.

2. On the Tools menu, click Accounts.

3. In Internet Accounts, click the Mail tab, select the mail account, and then click Properties.

4. Click the Servers tab.

   Note

   For increased security, your POP3 users should use Secure Password Authentication to log on to their incoming server. For more information, see the Windows Server2003 online documentation.

5. Under Server Information, in Outgoing mail (SMTP), type the fully-qualified domain name of your Exchange server.

   Configuring server information on a POP3 client

   

6. Click OK.