Connected: An Internet Encyclopedia
RFC 1035 - 3.3.5. MF RDATA format (Obsolete)
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3.3.5. MF RDATA format (Obsolete)

    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    /                   MADNAME                     /
    /                                               /
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

where:

MADNAME         A <domain-name> which specifies a host which has a mail
                agent for the domain which will accept mail for
                forwarding to the domain.

MF records cause additional section processing which looks up an A type record corresponding to MADNAME.

MF is obsolete. See the definition of MX and [RFC-974] for details ofw the new scheme. The recommended policy for dealing with MD RRs found in a master file is to reject them, or to convert them to MX RRs with a preference of 10.


Next: 3.3.6. MG RDATA format (EXPERIMENTAL)

Connected: An Internet Encyclopedia
RFC 1035 - 3.3.5. MF RDATA format (Obsolete)