DNS Record Model

Added in version 1.2.0 — DNS name length rules

When DNS validation is enabled (via the DNS_VALIDATION_LEVEL configuration), DNSRecord enforces the following DNS label and name length rules, as specified by RFC 1035 §3.1:

• Each label (the parts of the name separated by dots) must be no more than 63 bytes in wire format
• Empty labels (e.g., consecutive dots or leading/trailing dots) are not allowed
• The total length of the fully qualified DNS name (including the zone and all dots, in wire format) must not exceed 255 bytes

See the installation guide for configuration options.