Changing the Outlook 2007 Outgoing mail Port
1. Open Outlook 2007
2. Select the 'Tools' menu and select 'Account settings'
3. Select the account with Enlighten Hosting and then select 'Change'
4. Select 'More settings'
5. Select the 'Advanced' tab
6. Change the Outgoing Server (SMTP) port from 25 to 366
7. Select 'OK' then 'Next' and then 'Finish' and you're done.