ActiveXperts Knowledge Base Article 7500034

Q7500034 - I want to use our Offcie365 account to send out e-mail alerts. However, we do not want to use OAuth2 as it is very complex to configure. Is there a way to use password authentication with Office365?

Yes, it is possible. Use smtp-legacy.office365.com on port 587 using STARTTLS.

Please note that the default security will not allow you to, and you'll end up with an error from the smtp-legacy.office365.com server saying:
535: 5.7.139 Authentication unsuccessful, user is locked by your organization's security defaults policy

For a solution, see: FAQ #7500036

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