How do I enable SMTP server authentication?

Microsoft Outlook Express

1. From the Tools menu, choose Accounts.
2. Select the "Mail" tab.
3. Click 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. IncrediMail 618 and higher

1. From the Tools menu, choose Accounts.
2. Click 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 in the Mail Accounts window.

Microsoft Entourage 2001

1. From the Tools menu, choose Accounts.
2. Double-click the mail account you wish to modify.
3. In 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.

 
Mozilla Thunderbird

1. From the Tools menu, choose Account Settings.
2. Select Outgoing Server(SMTP).
3. On the right side select the server you wish to edit.
4. Click on Edit
5. In the Section that says Sercurity And Authorization, be sure the Use Name and Password box is checked, and make sure to put your email address in the box labled User Name.  DO NOT change the Use Secure Connection Settings.