Outlook SMTP Authentication

Click on Tools then Email Accounts
Select View of change existing e-mail accounts
Click Next
Select your mail account and click Change
Click on the More Settings button
Click on the Outgoing Server Tab
Put a check in “My Outgoing server (SMTP) requires authentication
Leave the Radio Button in “Use same settings as my incoming mail server”
Click Ok
Click Next
Click Finish

Outlook Express SMTP Authentication

Click on Tools then Accounts
Select the Mail Tab
Select your email account and click Properties
Click Servers tab
Under Outgoing Mail Server at the bottom check “My server requires authentication”
Then click the Settings button
“Use same settings as my incoming mail server” should be selected
Click OK
Click OK
Click Close