Email alert i/o timeout error dial tcp missing receiver missing group labels

I’m getting the following error when trying to send a Test email notification from my RHEL 8 (Linux) sever. Installed Prometheus and Grafana as services (instead of using Docker images) using YUM repository installation. Can someone please help?

This is the file path: /etc/grafana/grafana.ini
enabled = true
host = **:587
user = ****
password = *****
skip_verify = false
from_address = noreply@
from_name = Grafana

Tried with starttls = nostarttls option also in the same file but still getting the same error. t=2023-03-30T09:05:03.607196208-05:00 level=error msg=“Missing receiver” t=2023-03-30T09:05:03.607257464-05:00 level=error msg=“Missing group labels”
logger=alertmanager org=1 t=2023-03-30T09:05:12.375168702-05:00 level=error component=alertmanager orgID=1 component=dispatcher msg=“Notify for alerts failed” num_alerts=16 err=“Email Alerts/email[0]: notify retry canceled due to unrecoverable error after 1 attempts: failed to send notification to email addresses: dial tcp i/o timeout”
logger=context userId=1 orgId=1 uname=admin t=2023-03-30T09:05:13.608405778-05:00 level=info msg=“Request Completed” method=POST path=/api/alertmanager/grafana/config/api/v1/receivers/test status=408 remote_addr=xx.xx.xx.xx time_ms=10034 duration=10.034264628s size=500 referer=“http://xx.xx.xx.xx:3000/alerting/notifications/receivers/Email%20Alerts/edit?alertmanager=grafana” handler=/api/alertmanager/grafana/config/api/v1/receivers/test

Getting similar error while using webex also. Can anyone share update

You can ignore these. It’s a irrelevant error which should be fixed in the latest versions of Grafana 10.

The problem is the server cannot talk to whatever the email server is at

Thanks Georgerobinson, Does that mean i need to configure smtp and port 587 should be unblocked? Please guide.