Zone

• ZONE01

  Fully qualified master nameserver in SOA

• ZONE02

  SOA 'refresh' minimum value

• ZONE03

  SOA 'retry' lower than 'refresh'

• ZONE04

  SOA 'retry' at least 1 hour

• ZONE05

  SOA 'expire' minimum value

• ZONE06

  SOA 'minimum' maximum value

• ZONE07

  SOA master is not an alias

• ZONE08

  MX is not an alias

• ZONE09

  MX record present

• ZONE10

  No multiple SOA records

• ZONE11

  SPF policy at zone apex

• ZONE12

  CSYNC RR at zone apex

• ZONE13

  SPF DNS lookup limit compliance

• ZONE14

  ZONEMD RR at zone apex (RFC 8976 compliance)