I got Error 554 when send emails from Outlook

How to fix the problem:

  • In Outlook, go to "Tools" and select "Email Accounts". Make sure "View or change existing e-mail accounts" is checked.
  • Click Next.Select your account from the list and click "Change".
  • Select "More Settings".
  • Select "Outgoing Server".
  • Check "My outgoing server (SMTP) requires authentication".
  • Make sure that Use same setting as my incoming mail server is selected
  • Click "OK", then "Next", then "Finish".

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