- Click on File, Account settings in Outlook 2010 and 2013 or Tools, Account settings in Outlook 2007. See below for the menu path in older versions of Outlook
- Select the account and click Change to open the account settings dialog (or double click on the account).
- Click More Settings.
- On the Outgoing server tab, select the authentication method used by your SMTP server. Most will use the same as the Incoming server. If you use a server that is associated with a different account, enter the correct username and password on this tab.
- Change the port numbers and encryption method on the Advanced tab as needed.
Note: The screenshot above is the More Settings dialog for an IMAP account in Outlook 2013. The options available vary for POP3 accounts and in older versions of Outlook.
In Outlook 2002/2003, go to Tools, Email Accounts, View or Change Accounts. Select the Account and click change - now click the More Settings button.