positive_max_ttl

Since: Version 2025.03.19-1d3f1f67

The functionality described in this section requires version 2025.03.19-1d3f1f67 of KumoMTA, or a more recent version.

Duration string. Upper bound for positive-response TTLs. Responses with a TTL above this value are cached as if their TTL were positive_max_ttl. Useful for forcing periodic re-resolution of long-lived upstream records. Unset by default.