The following steps will assist you in checking your e-mail account settings in Outlook 2007:
1. In Outlook 2007 select Tools, followed by Account Settings.
2. Under the E-mail tab, highlight your e-mail account and select Change.
3. Locate Incoming Server and set this to: mail.yourdomain (e.g.: mail.example.com)
4. Locate Outgoing Server (SMTP) and set this to: mail.yourdomain (e.g.: mail.example.com)
5. Ensure that your User Name is your e-mail address (e.g.: firstname.lastname@example.org)
6. Click on the More Settings button.
7. When next box appears, select the Outgoing Server tab:
- Place a tick in the box labelled My outgoing server requires authentication.
- Ensure that the option Use same settings as my incoming server is selected.
8. Select the Advanced tab:
- Ensure that the tick box labelled This server requires and encrypted connection (SSL) is unticked.
- Set the Incoming server port to: 110 (for POP accounts) or 143 (for IMAP accounts)
- Set the drop-down field labelled Use the following type of encrypted connection to None.
- Set the Outgoing server port to: 587
9. Click OK.
10. You will be taken back at the Internet E-mail Settings window. Click Next.
11. Click Finish to save the changes.
Note: This applies to both POP / POP3 and IMAP accounts.