Changelog
- 68234df docs(postalHealth): sample message_threshold 1000
- f99b46b feat(postalHealth): separate total queue and backlog thresholds
- 23e3730 feat(postalHealth): alarm held messages by reason category
- 630ea0d feat(postalHealth): reduce queue/held alarm noise and run DB checks on one node
- 70bb5e7 fix(postalHealth): send queue and held message alarms
- 499884c feat(postalHealth): alarm on queued messages locked longer than stale_lock_minutes