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DNS Message Resource Record Field Formats (Page 5 of 5) PTR / Pointer Resource Record (Type Value 12) This record carries a pointer to a resource record; used for reverse address lookups. It contains one data field, shown in Table 176.
This special record contains information about the mail server(s) to be used for sending e-mail to the domain. Each record contains two fields as Table 177 illustrates.
This descriptive record contains additional descriptive information about the named object (Table 178).
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