Grafana SMTP notification with Outlook

Hi,

Can anyone help me to configure Grafana SMTP with Outlook?
We are using Grafana helm charts and adding the below code inside chart values.

garafna.ini

smtp:
      enabled: true
      host: smtp-mail.outlook.com:587
      from_address: <my_ouutlook_username>
      passwordKey: "my_outlook-password"
      userKey: "user"

But when I trigger a test alert it shows the following error.

logger=alerting.notifier.email t=2023-06-27T13:51:19.877310434Z level=error msg=“Missing receiver”
logger=alerting.notifier.email t=2023-06-27T13:51:19.877357241Z level=error msg=“Missing group labels”

I tried following but still had no luck

startTLS_policy = NoStartTLS

Any help is appreciated.