Internet Assigned Numbers Authority

                                                       Sender Policy Framework (SPF) Parameters

   Created
           2012-04-17

   Last Updated
           2014-04-29

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   Registry included below

     * Modifier Names

Modifier Names

   Registration Procedure(s)

 Specification Required

   Expert(s)

 Unassigned

   Reference
           [RFC6652]

   Available Formats
           [IMG]
           CSV

   Modifier Reference Status
     exp    [RFC7208] Current
   redirect [RFC7208] Current
      ra    [RFC6652] Current
      rp    [RFC6652] Current
      rr    [RFC6652] Current

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