SOA record
The SOA (Start of Authority) record provides authoritative information about the DNS zone, including the primary DNS server, the administrator's email address, the domain serial number (used to detect any changes to the zone data) and various timers that control the management and validity of records. The DNS service allows only one SOA record for each domain.
The SOA record configuration requires:
Domain,
String and
TTL.
Domain
The domain is the one you selected when activating the DNS service and cannot be changed.
String
The SOA record string consists of:
dns1.cloud.it hostmaster.cloud.it 0 28800 7200 604800 86400
| |
|
dns1.cloud.it |
hostmaster.cloud.it |
0 |
28800 |
7200 |
604800 |
86400 |
| domain |
class |
primary_server |
contact |
serial_number |
refresh |
retry |
expire |
minimum |
| domain |
the origin domain of the DNS zone (does not need to be entered manually) |
| class |
the address class, generally IN (Internet), which does not need to be specified during configuration |
| primary_server |
the name of the primary DNS server that manages the DNS zone |
| contact |
the email address of the domain administrator, written with a dot instead of the @ symbol |
| serial_number |
a progressive integer (maximum 10 digits) that identifies the version of the DNS zone |
| refresh |
the interval (in seconds) between consecutive checks for changes to the DNS zone |
| retry |
the waiting time (in seconds) between a failed attempt and the next attempt to access the DNS server |
| expire |
the maximum time (in seconds) for which the DNS zone information remains valid without updates from the primary server |
| minimum |
the default value (in seconds) that indicates how long the other DNS records remain valid |