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Default Zone Settings

Allow transfers from...
This sets the servers that are allowed to perform zone transfers from the DNS server. When a slave server requests updated information from the master server, the master server will transfer it to the slave server if authorized. This procedure is known as a zone transfer. No servers are authorized by default. If you are uncertain of what to enter in here, leave the default set and contact your network administrator.
Allow queries from...
This sets from which IPs your DNS server will accept DNS queries. By default the DNS server will accept queries from all IP addresses. If you are uncertain about what should be entered in here, leave the default on.