When I add the notification channel in the Alert settings and try to send a test notification, i get an error. Any idea on how to fix this?

INFO[11-13|23:27:20] Sending alert notification to logger=alerting.notifier.email addresses=[root@mydomain.com] singleEmail=false

Nov 13 23:27:20 EROR[11-13|23:27:20] Failed to send alert notification email logger=alerting.notifier.email error="Failed to send notification to email addresses: root@mydomain.com: unencrypted connection"

Nov 13 23:27:20 EROR[11-13|23:27:20] failed to send notification logger=alerting.notifier uid= error="Failed to send notification to email addresses: root@mydomain.com: unencrypted connection"

Nov 13 23:27:20 EROR[11-13|23:27:20] failed to send notification logger=alerting.notifier uid= error="Failed to send notification to email addresses: root@mydomain.com: unencrypted connection"

Nov 13 23:27:20 EROR[11-13|23:27:20] Failed to send alert notifications logger=context userId=2 orgId=1 uname=root error="Failed to send notification to email addresses: root@mydomain.com: unencrypted connection" remote_addr=172.17.2.1

Nov 13 23:27:20 EROR[11-13|23:27:20] Request Completed logger=context userId=2 orgId=1 uname=root method=POST path=/api/alert-notifications/test status=500 remote_addr=172.17.2.1 time_ms=27 size=48 referer=https://grafana.mydomain.com/alerting/notification/3/edit

Thanks in advance!