How to amend your SMTP port in Microsoft Outlook 2003

It is quite common that some ISPs (Internet Service Providers) will block sending mail on the default port 25. Follow the simple steps listed below to show you how changing your port to 587 which will allow mail to be sent.

Step 1. Start Microsoft Outlook 2003. From the top menu bar, select ‘Tools’ then ‘Email Accounts’ from the dropdown menu.

How to amend your SMTP port in Microsoft Outlook 2003

Step 2. Select ‘View or Change Existing Account’ by clicking the radio button.

Screenshot of the "E-mail Accounts" wizard in Microsoft Outlook. The option "View or change existing e-mail accounts" is selected and highlighted with a red box. A red arrow points to the "Next >" button at the bottom right of the screen, essential for efficient web design in Horsham workflows.

Step 3. Use your cursor to highlight the email account you want to change the outgoing port for and click ‘Change’.

How to amend your SMTP port in Microsoft Outlook 2003

Step 4. Click on the ‘More Settings’ button

How to amend your SMTP port in Microsoft Outlook 2003

Step 5. Select the Advanced Tab in the navigation, Change the ‘Out Going Server’ Port to 587 and click ‘OK’

How to amend your SMTP port in Microsoft Outlook 2003

Step 6. Once done, click ‘Next’

How to amend your SMTP port in Microsoft Outlook 2003

Step 7. Now click ‘Finish’

How to amend your SMTP port in Microsoft Outlook 2003

This means you should now be able to send mail via our outgoing mail server smtp.iomartmail.com, without the risk of being blocked by your ISP.