June 2017
Beginner to intermediate
742 pages
18h 29m
English
Content preview from Mastering Active Directory
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Start of authority record
Each DNS zone must have a start of authority (SOA) record, and it is created when a zone is created for the first time. This record provides lots of general information for the DNS zones, such as the following:
- Primary server: The best DNS source for the zone.
- Responsible person: The email address of the zone administrator.
- Serial number: A number that is used to track the zone changes. If there is a secondary DNS zone on another server, when it checks the updates with the master zone, it will compare this serial number. If the secondary zone has a lower serial number than the master zone, it will update its copy.
- Refresh interval: This value is defined when the secondary server should check with the master server ...