checkId: check.integration.teams plugin: stellaops.doctor.integration severity: info tags: [notification, teams, webhook]

Teams Webhook

This Doctor check validates that the configured Microsoft Teams webhook URL is well-formed and that the Teams webhook host is reachable, so operators can trust that deployment, policy, and security alerts will land in their Teams channels.

What It Checks

Reads the Microsoft Teams webhook URL from Teams:WebhookUrl or Notify:Teams:WebhookUrl. First validates the URL format: warns if the URL does not contain webhook.office.com or teams.microsoft.com. Then tests host reachability by sending an HTTP GET to the base URL of the webhook host. The check passes if the Teams host is reachable, warns if the host is unreachable or if the URL format is suspicious. Does not send an actual webhook payload to avoid generating noise in the Teams channel.

Why It Matters

Microsoft Teams notifications keep operators informed about deployment status, policy violations, security findings, and approval requests. A misconfigured or unreachable Teams webhook means critical alerts go undelivered, potentially delaying incident response and approval workflows. For organizations standardized on Microsoft 365, Teams may be the primary notification channel.

Common Causes

How to Fix

Docker Compose

# Check Teams webhook configuration
grep 'TEAMS__WEBHOOKURL\|NOTIFY__TEAMS' .env

# Test connectivity to Teams webhook host
docker compose exec gateway curl -sv https://webhook.office.com/ -o /dev/null

# Update webhook URL
echo 'Teams__WebhookUrl=https://webhook.office.com/webhookb2/...' >> .env
docker compose restart platform

# If behind a proxy
echo 'HTTP_PROXY=http://proxy:8080' >> .env
echo 'HTTPS_PROXY=http://proxy:8080' >> .env
docker compose restart platform

Bare Metal / systemd

# Verify configuration
cat /etc/stellaops/appsettings.Production.json | jq '.Teams'

# Test connectivity
curl -sv https://webhook.office.com/ -o /dev/null

# Update webhook URL
sudo nano /etc/stellaops/appsettings.Production.json
sudo systemctl restart stellaops-platform

Kubernetes / Helm

# values.yaml
teams:
  webhookUrl: https://webhook.office.com/webhookb2/...
  # or use an existing secret
  existingSecret: stellaops-teams-webhook

helm upgrade stellaops ./chart -f values.yaml

Verification

stella doctor run --check check.integration.teams