I can no longer send email from my Outlook 2003, but no changes have been made on my side. Help! 

This is a fairly common issue. Generally, this has to do with the outgoing port or SMTP authentication.

1. Open Outlook 2003.

2. Click on 'Tools' then select 'E-mail Accounts'.

3. Here you will see a list of all of your email accounts, double click the account that is giving you problems.

4. Select the 'More Settings' button.

5. Click on the 'Outgoing Server' tab and make sure that the top box is checked 'Outgoing Server (SMTP) Requires Authentication'.

6. Click the 'Advanced' tab and look for outgoing server port number. If the outgoing port is set to 25, change it to 587.

7. Click OK and then finish, send a test email to make sure these changes worked.

• If this did not help, you will want to double check all of your basic settings (Username, password, mail server etc).
• Sometimes Outlook will get stuck on one email, try deleting all of the emails in your outgoing folder and retry.