Ensure your network environment meets the necessary requirements to use DANE and TLSA
records:
- TLSA record data
- You must already have the TLSA record data or will be generating the rdata from a third-party site. For more information on TLSA record generation, refer to RFC 7671 in Reference: DNS/DHCP Server RFC compliance.
- You could also generate the rdata directly from a DNS server or mail-exchange server.