These instructions assume your email account has already been setup and is collecting email correctly. Please follow the below instructions to enable SMTP authentication in Microsoft Outlook-2003
1. Open Microsoft Outlook 2003
2. Click on ‘Tools’ menu and select ‘E-mail Account
4. Click on Next.
6. Click on the ‘Change’ button
7. Click on ‘More settings’ button
8.Click on Advanced Tab
9.Change the outgoing port number 25 or 587
10.Click on Ok.
12.Click on Finish.