MANAGING DNS, DHCP AND EXCHANGE

(Dummy Text: After you create the necessary zone files, you can add records to the zones. Computers that need to be accessed from Active Directory and DNS domains must have DNS records. Although there are many different types of DNS records, most of these record types aren’t commonly used. So rather than focus on record types you probably won’t use, let’s focus on the ones you will use:

  • A (address) Maps a host name to an IP address. When a computer has multiple adapter cards or IP addresses, or both, it should have multiple address records.
  • CNAME (canonical name) Sets an alias for a host name. For example, using this record, zeta.microsoft.com can have an alias as www.microsoft.com.
  • MX (mail exchange) Specifies a mail exchange server for the domain, which allows mail to be delivered to the correct mail servers in the domain.
  • NS (name server) Specifies a name server for the domain, which allows DNS lookups within various zones. Each primary and secondary name server should be declared through this record.
  • PTR (pointer) Creates a pointer that maps an IP address to a host name for reverse lookups.
  • SOA (start of authority) Declares the host that’s the most authoritative for the zone and, as such, is the best source of DNS information for the zone. Each zone file must have an SOA record (which is created automatically when you add a zone)