- Open Outlook 2007
- "Click" Tools, from the
pull down menu and select E-mail Accounts Settings
- Highlight your email account and
click on the “Change…” button.

- Click on the “More settings…” button
in the bottom right corner.

- Under the
Outgoing Server tab "check" My Outgoing Server (SMTP) requires
authentication; and "click" OK

- "Click" Next
- Review the account information; and
"click" Finish