Start Soa updating zone files

Soa updating zone files

Now if you control all of the authorative DNS servers for a domain (that is, the DNS servers that actually host the zone files and can answers queries for the domain as opposed to having to ask another DNS server), then with the exception of how long negative responses should be cached, these settings may not seem as important since you can force the secondary servers to update whenever needed.

NSD, Power DNS) are using the zone files only as a starting point to compile them into database format, see also Microsoft DNS with Active Directory-database integration.

A zone file is a sequence of entries for resource records.

The basics of creating A records (which translate a hostname to an IP address) are simple enough, but when it comes to understanding how changes are propagated in DNS, this is often something of a mystery.

There is a widely held belief that any change made the DNS zone file of a domain is instantly seen throughout the Internet. When advising that changes be made to a zone file to fix a problem, I routinely add the following caveat: Changes to a zone file are almost never instantaneous regardless of how despreate you are that they be instantaneous.

To create a CNAME record, follow these steps: MX records identify mail exchange servers for the domain.

These servers are responsible for processing or forwarding mail within the domain.

In the hosting industry, the Domain Name System (DNS) is one of the most critical pieces, right behind websites themselves.

Without DNS, that website you've worked so hard on would be completely invisible.

So a DNS zone file contains an SOA record specifying the authoritative name server, along with some other information such as a "serial number".

I'm trying to understand the purpose of the serial number.

Any reasonable zonefile editor will increase the serial number automagically.