Question for you… Are you using the New Relic connector in MS Teams? Or are you using the generic web hook connector?
Judging by the error message you’re seeing (Notification request ignored - NewRelic unknown event) , you probably are using the New Relic connector in MS Teams. Microsoft has not updated this connector in some time, and although it worked with our old legacy alerting system, it does not work with our new Alerts system. I would recommend using the generic webhook connector through MS Teams instead.
Let me know if that’s not the issue and we’ll keep working with you!