Internet Assigned Numbers Authority

                                                       Delivery Status Notification (DSN) Types

   Created
           2002-11-07

   Last Updated
           2016-05-20

   Available Formats
           [IMG]
           XML [IMG]
           HTML [IMG]
           Plain text

   Registries included below

     * Address Types
     * Diagnostic Types
     * MTA Name Types

Address Types

   Registration Procedure(s)

 RFC Required

   Reference
           [RFC3461][RFC3464]

   Available Formats
           [IMG]
           CSV

   address-type    Description     Reference
   rfc822       Internet Mail      [RFC3461]
   x400         X.400 Mail         [RFC2156]
   UTF-8        UTF-8 mail address [RFC6533]

Diagnostic Types

   Registration Procedure(s)

 RFC Required

   Reference
           [RFC3461][RFC3464]

   Available Formats
           [IMG]
           CSV

   diagnostic-type  Description           Reference
   smtp            Internet Mail [RFC3461][RFC3464][RFC6533]

MTA Name Types

   Registration Procedure(s)

 RFC Required

   Reference
           [RFC3461][RFC3464]

   Available Formats
           [IMG]
           CSV

   MTA-name-type  Description  Reference
   dns           Internet Mail [RFC3461]
   x400          X.400 Mail    [RFC2156]

   Licensing Terms