Outlook 2010 Smtp Error 550

The ‘550 Authentication is required for relay’ error might occur while sending emails from your email clients such as Microsoft Outlook or Microsoft Express. SMTP requires authentication to resolve this Outlook 2010 SMTP error 550 error on the Microsoft Outlook 2010.

The instructions to resolve the SMTP error code 550 are mentioned below.

  • Step 1:On your Windows computer, open the Microsoft Outlook 2010 application’s main interface by double-clicking its icon.
  • Step 2:After clicking the File tab, select the Info option and click the Account Settings option.
  • Step 3:Select the email address of your account from the displayed Accounts list.
  • Step 4:Once you select the Change option, click the More Settings button.
  • Step 5:Navigate to the Outgoing Server tab and check if you have selected the ‘My outgoing server (SMTP) requires authentication’ option.
  • Step 6:Also, ensure that you have clicked the radio button beside the ‘Use same settings as my incoming mail server’ option.
  • Step 7:Click OK Next Finish
  • Step 8:Check if the Outlook 2010 SMTP error 550 has been resolved.
  • Step 9:Click the Call button provided on this web page for any queries.
  • Step 10:Our technical experts will help you in resolving the Outlook 2010 SMTP error 550 problem.
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