I searched the forum and I do not see any error like the one that appears in NAV.
I have configured my Office365 account on the SMTP page and when I push send test emails button and send it to the same email address that i configured, no error appears. But if I push the test button again and send it to other address I get the error that I attached below (5.2.0 STOREDRV.Submission.Exception: SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Can not submit message).
Other times I solved the error by changing the Office365's password account for a new one, but I do not know if this temporary solution is correct or we need to configure something else.
Can we do something else?
Thanks for everything.