fluent smtp throws out “not found” error when sending test mail

Hello @razh9,

I’ve reviewed your ticket and the information you’ve provided. Here are some troubleshooting steps that might help resolve the “Not Found” error you’re experiencing when sending a test mail:

Troubleshooting Steps:

1. Verify App Callback URL:?Check that the URL you’re using to access the API endpoint provided by FluentSMTP is correct. Make sure it includes the necessary parameters and is spelled correctly.
2. Check Permissions:?Ensure that the email address you’re trying to use as the sender has a Mailbox created and has permission to send emails. Additionally, it should have a valid Office365 subscription.
3. Review Account Type:?Confirm that you selected the correct account type while creating the Azure App. It should be “Accounts in any organizational directory (Any Azure AD directory – Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)“.
4. Logged-in Account:?Verify that you’re logged into the Microsoft account associated with the email address used to create the Azure App when accessing the authorization page.
5. Domain Verification:?Double-check that you’ve verified your domains within Microsoft Office365.

If you continue to experience the error after completing these steps, I recommend referring to the Office 365 API documentation here: https://fluentsmtp.com/docs/setup-outlook-with-fluentsmtp/. Alternatively, you can reach out to Microsoft Office365 Support for further assistance.

I hope this helps! Please let me know if you have any further questions.