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Type of Record What it does
A (Host) Classic resource record. Maps hostname to IP(ipv4) PTR Maps IP to hostname (Reverse of A (Host) AAAA Maps hostname to ip (ipv6) Cname Canonical name, in plain English an alias.such as
Web Server,FTP Server, Chat Server NS Identifies DNS name servers. Important for forwarders MX Mail servers, particularly for other domains.MX records required to deliver internet email. _SRV Required for Active Directory. Whole family of
underscore service,records, for example, gc = global catalog.
SOA Make a point of finding the Start of Authority (SOA) tab at the DNS Server. For more knowledge Srv records :- A SRV or Service Record is a category of data in the DNS specifying information on available services. When looking up for a service, you must first lookup the SRV Record for the service to see which server actually handles it. Then it looks up the Address Record for the server to connect to its IP Address. Authoritative Name Server [NS] Record :-A Zone should contain one NS Record for each of its own DNS servers (primary and secondary). This mostly is used for Zone Transfer purposes (notify). These NS Records have the same name as the Zone in which they are located. SOA :-This record is used while syncronising data between multiple computers.A given zone must have precisely one SOA record which contains Name of Primary DNS Server,Mailbox of the Responsible Person,Serial Number: Used by Secondary DNS Servers to check if the Zone has changed. If the Serial Number is higher than what the Secondary Server has, a Zone Transfer will be initiated,Refresh Interval: How often Secondary DNS Servers should check if changes are made to the zone,Retry Interval: How often Secondary DNS Server should retry checking, if changes are made - if the first refresh fails,Expire Interval: How long the Zone will be valid after a refresh. Secondary Servers will discard the Zone if no refresh could be made within this interval.Minimum (Default) TTL: Used as the default TTL for new Records created within the zone. Also used by other DNS Server to cache negative responses (such as Record does not exist, etc.).
regards krushna_sa@yahoo.com
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∙ 14y ago
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