CHW-5715 PostmarkWebhookNotConfigured
postmark webhook receiver is not configured; set POSTMARK_WEBHOOK_USER and POSTMARK_WEBHOOK_PASSWORD on the server before re-enabling the webhook
Default message: postmark webhook receiver is not configured; set POSTMARK_WEBHOOK_USER and POSTMARK_WEBHOOK_PASSWORD on the server before re-enabling the webhook
HTTP status:503(server)
Problem. The Postmark inbound-webhook endpoint returned 503.
Cause. The proxy is missing POSTMARK_WEBHOOK_SECRET (or the
related signing secret), so it cannot authenticate the inbound POST.
The 503 makes Postmark retry — giving the operator time to configure
the secret — instead of silently accepting unauthenticated events.
Fix. Set POSTMARK_WEBHOOK_SECRET (and the matching signing
secret) on the proxy process and restart. HTTP 503.