negative_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 negative-response (NXDOMAIN, NODATA) TTLs. Responses with a TTL above this value are cached as if their TTL were negative_max_ttl. Unset by default.