Alertmanager send Resolved notifications to a separate channel

[Arnav Bose]

Hi,

We have configured Prometheus-based alerts for our system and it works fine. The alerts are going to specific channels in Slack and Teams. For the purpose generating tickets and auto-closure of tickets (on resolved messages) we are sending Resolved status for one single alert. Now, the support guys are looking into alerts in the main slack channel and they don't want to receive the resolved notification there (which is mainly for auto closure of ticket). Is there any way we can send the Resolved notifications to another channel instead of the channel where it posts the alerts?

This is an excerpt from the config

```

    - match_re:
        component: 'platform'
      receiver: 'slack-notifications-platform'
      continue: false

- name: 'slack-notifications-platform'
  slack_configs:
  - send_resolved: true
    api_url: 'https://hooks.slack.com/services/T091V/B8UHDTR/hfY66GDhwvRD5myKbZ88cva'
    channel: '#telemetry_alerts_ops'
    color: '{{ if eq .Status "resolved" }}good{{ else }}{{ if eq .CommonLabels.severity "minor"}}warning{{ else }}danger{{ end }}{{ end }}'
    title: '{{ if gt (.Alerts.Firing | len) 0 }}[FIRING: {{ .Alerts.Firing | len }}]{{ end }}{{ if gt (.Alerts.Resolved | len) 0 }}[RESOLVED: {{ .Alerts.Resolved | len }}]{{ end }}{{ .GroupLabels.alertname }} ({{ .CommonLabels.severity }})'
    text: '{{ template "slack.common.text" . }}'