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If you have an Office 365 e-mail server from which you would like to send your e-mails via SMTP, you are welcome to do this in the LDB Labordatenbank via OAuth 2.0 using a secure transmission method.

You can find detailed instructions on how to configure OAuth 2.0 in your Microsoft Office 365 email server in the following guide. https://aka.ms/smtp_auth_disabled

Our customers' experience showed that the following pages were a great help, as well as the note that the ServicePrincipal must be authorised for the email address via Powershell.

• Use client credentials grant flow to authenticate SMTP, IMAP, and POP connections
• Configuring OAuth login with MS 365 Exchange Online

In the system settings in the SMTP area, you will find a separate area, OAuth settings for SMTP, where you can store your login data for OAuth 2.0.

This eliminates the username and password entries in the general SMTP settings of the LDB Labordatenbank:

And this is what the whole thing could look like, filled with data.