Enable SMTP server authentication for these email clients:

• Microsoft Outlook 2003 and 2002
• Microsoft Outlook Express
• Microsoft Outlook 98 and 2000
• Microsoft Outlook Express for Macintosh
• IncrediMail 618 and higher
• Microsoft Entourage 2001
• Macintosh Mail client

Microsoft Outlook 2002 (XP) and 2003

1. From the Tools menu, choose "E-mail Accounts".
2. Click in the circle beside “View or change existing e-mail accounts”. Click Next.
3. Click on the email account you wish to modify and then click Change.
4. Click More Settings.
5. From the tabs along the top, click “Outgoing Server”.
6. Check "My outgoing server requires authentication”.
7. Also, make sure to check “Use same settings as my incoming mail server”.
8. Click OK.
9. Click Next.
10. Click Finish.

Microsoft Outlook Express

1. From the Tools menu, choose "Accounts."
2. Select the "Mail" tab.
3. Click on the email account you wish to modify and then click Properties
4. Select the "Servers" tab.
5. Check the box next to "My Server Requires Authentication."
6. Click the Settings button.
7. Ensure that Use same settings as my incoming mail server is selected and click OK.
8. Click Apply on the properties dialog box to confirm your changes and to close the window.
9. Click Close on the Internet Account dialog box to complete the settings change.
10. Click Close.

Microsoft Outlook 98 and 2000

1. From the Tools menu, choose "Accounts."
2. Select the "Mail" tab.
3. Click on the email account you wish to modify and click Properties.
4. Click the "Servers" tab.
5. Check the box next to "My Server Requires Authentication."
6. Click the Settings button.
7. Ensure that Use same settings as my incoming mail server is selected and click OK.
8. Click Apply on the properties dialog box to confirm your changes and to close the window.
9. Click Close on the Internet Account dialog box to complete the settings change.

Note: Please make sure that "Log on using Secure Password Authentication" is not checked.

Microsoft Outlook Express for Macintosh

1. From the Tools menu, select "Accounts."
2. Select the "Mail" tab.
3. Click on the email account you wish to modify and click on Edit within the menu bar.
4. Under "Sending Mail," click Click here for advanced server settings.
5. Check the box next to "SMTP server requires authentication."
6. Select the Log on using button.
7. In the Account ID field, enter the Yahoo! Member ID with the domain extension added. In place of the @ symbol enter a % symbol (ex MemberID%doman.net).
8. In the Password field enter the authentication password and click on the Save Password box.
9. Click on the button in the top left corner of the window to save the configuration.
10. Click OK in the Edit Account window to save the configuration.
11. In the Accounts window, click on the button in the top left corner of the window.

IncrediMail 618 and higher

1. From the Tools menu, choose "Accounts."
2. Click on the email account you wish to modify and click the Properties button.
3. Click the "Servers" tab.
4. Under Outgoing Mail Server, check the box next to "My Server Requires Authentication."
5. Click the Settings button.
6. Ensure that Use same settings as my incoming mail server is selected.
7. Click OK to close the dialog box.
8. Click OK, then Close on the Mail Accounts window.

Microsoft Entourage 2001

1. From the Tools menu, choose "Accounts."
2. Double-click on the mail account you wish to modify.
3. On the Account Settings window, scroll to the "Sending Mail" category toward the bottom.
4. Click Click here for Advanced Sending Options.
5. Check the box next to "SMTP Server Requires Authentication."
6. Select the Use same settings as receiving mail server radio button.
7. Close this window by clicking the tiny box in the upper-left corner.
8. Click OK.

Macintosh Mail client (OS X 10.4 and above)

1. Click the Mail menu and select Preferences.
2. Click the Accounts tab and under Outgoing Mail Server SMTP, click the Server Settings button.
3. Make sure the Outgoing Mail Server, Server Port information is correct.
4. Make sure the box Use Secure Sockets Layer (SSL) is unchecked.
5. Make sure your correct username and password are included.
6. Click OK.

To ensure the new settings are configured properly, we suggest closing the Entourage client and opening it again before sending or receiving messages.