HOWTO: Change SMTP Outbound Port in MS Outlook
HOWTO: Change SMTP Outbound Port in MS Outlook
Open MS Outlook
Click 'Tools', then 'Email Accounts'

Click 'Next'

Highlight your account and click 'Change...'

Click 'More Settings...'

Select the 'Advanced' tab

Change the Outgoing server (SMTP) port number to 587
Click OK to confirm the change