[Alberto Parente]

Here is what the email log shows.

Client error: POST https://graph.microsoft.com/v1.0/me/sendMail resulted in a 403 Forbidden response: {“error”:{“code”:”ErrorSendAsDenied”,”message”:”The user account which was used to submit this request does not have the (truncated…)

Give the configured account “Send As” permissions on the “From” mailbox (admin.office365.com).

[Alberto Parente]

I already did that and still get an error.

Client error: POST https://graph.microsoft.com/v1.0/me/sendMail resulted in a 403 Forbidden response:
{“error”:{“code”:”ErrorSendAsDenied”,”message”:”The user account which was used to submit this request does not have the (truncated…)

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