Source of problem: SMTP server authentication Disabled
Enable SMTP server authentication for these email clients:
Microsoft Outlook 2002 (XP) and 2003
- From the Tools menu, choose E-mail Accounts.
- Click in the circle beside "View or change existing e-mail accounts." Click Next.
- Click the email account you wish to modify and then click Change.
- Click More Settings.
- From the tabs along the top, click "Outgoing Server."
- Check "My outgoing server requires authentication”.
- Also, make sure to check "Use same settings as my incoming mail server."
- Click OK.
- Click Next.
- Click Finish.
- From the Tools menu, choose Accounts.
- Select the "Mail" tab.
- Click the email account you wish to modify and then click Properties
- Select the "Servers" tab.
- Check the box next to "My Server Requires Authentication."
- Click the Settings button.
- Ensure that Use same settings as my incoming mail server is selected and click OK.
- Click Apply on the properties dialog box to confirm your changes and to close the window.
- Click Close on the Internet Account dialog box to complete the settings change.
- Click Close.
- From the Tools menu, choose Accounts.
- Select the Mail tab.
- Click on the email account you wish to modify and click Properties.
- Click the Servers tab.
- Check the box next to "My Server Requires Authentication."
- Click the Settings button.
- Ensure that "Use same settings as my incoming mail server" is selected and click OK.
- Click Apply on the properties dialog box to confirm your changes and to close the window.
- 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
- From the Tools menu, select Accounts.
- Select the Mail tab.
- Click the email account you wish to modify and click Edit within the menu bar.
- Under "Sending Mail," click "Click here for advanced server settings."
- Check the box next to "SMTP server requires authentication."
- Select the Log on using button.
- 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).
- In the Password field enter the authentication password and click the Save Password box.
- Click the button in the top left corner of the window to save the configuration.
- Click OK in the Edit Account window to save the configuration.
- In the Accounts window, click on the button in the top left corner of the window.
- From the Tools menu, choose Accounts.
- Click the email account you wish to modify and click the Properties button.
- Click the Servers tab.
- Under Outgoing Mail Server, check the box next to "My Server Requires Authentication."
- Click the Settings button.
- Ensure that "Use same settings as my incoming mail server" is selected.
- Click OK to close the dialog box.
- Click OK, then Close in the Mail Accounts window.
- From the Tools menu, choose Accounts.
- Double-click the mail account you wish to modify.
- In the Account Settings window, scroll to the "Sending Mail" category toward the bottom.
- Click "Click here for Advanced Sending Options."
- Check the box next to "SMTP Server Requires Authentication."
- Select the "Use same settings as receiving mail server" radio button.
- Close this window by clicking the tiny box in the upper-left corner.
- Click OK.
Macintosh Mail client (OS X 10.4 and above)
- Click the Mail menu and select Preferences.
- Click the Accounts tab and under Outgoing Mail Server SMTP, click the Server Settings button.
- Make sure the Outgoing Mail Server, Server Port information is correct. See the SSL email client articles.
- Make sure the box is checked for "Use Secure Sockets Layer (SSL)."
- Make sure your correct MemberID and password are included.
- 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.