1. Open Outlook. Click tools, email accounts.

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2. Put the bullet beside "View or change existing e-mail accounts".

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3. Highlight your email account and click the change button.

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4. Make sure you Outgoing mail server (SMTP) is set to mail.yourdomain.com. (*Note: Replace yourdomaim.com with your actual domain name.)

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5. Click on the More Settings ... button.

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6. Click on the Outgoing Server tab.

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7. Click on the check box next to "My outgoing server (SMTP) requires authentication".

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8. Put the bullet beside "Use same settings a my incoming mail server".

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9. Click the OK button.

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10. Click the next button.

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11. Click on the Finish button.

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