Mapping between X.400(1988) / ISO 10021 and RFC 822

Voir toute la rfc dans une seule page

Télécharger le PDF

RFC 1138               Mapping X.400(88) and 822           December 1989


        initial element of
        MTA.PerMessageTransferFields.trace-information will be
        generated already (from Date:).

        Consider the Received: field in question.  If the "by"  part
        of the received is present, use it to derive an
        MTS.GlobalDomainIdentifier.  If this is different from the
        one in the last element of
        MTA.PerMessageTransferFields.trace-information
        (MTA.TraceInformationElement.global-domain-identifier)
        create a new MTA.TraceInformationElement, and optionally
        remove
        MTA.PerMessageTransferFields.internal-trace-information.
        This removal should be done in cases where the message is
        being transferred to another MD where there is no bilateral
        agreement to preserve internal trace beyond the local MD.
        The trace creation is as for internal trace described below,
        except that no MTA field is needed.

        Then add a new element (MTA.InternalTraceInformationElement)
        to MTA.PerMessageTransferFields.internal-trace-information,
        creating this if needed.  This shall be done, even if
        inter-MD trace is created.  The
        MTA.InternalTraceInformationElement.global-domain-identifier
        should be set to the value derived.  The
        MTA.InternalTraceInformationElement.mta-supplied-information
        (MTA.MTASuppliedInformation) should be set as follows:

          MTA.MTASuppliedInformation.arrival-time
             Derived from the date of the Received: line

          MTA.MTASuppliedInformation.routing-action
             Set to relayed

        The MTA.InternalTraceInformationElement.mta-name should be
        taken from the "by" component of the "Received:" field,
        truncated to MTS.ub-mta-name-length (32).  For example:

           Received: from computer-science.nottingham.ac.uk by
              vs6.Cs.Ucl.AC.UK via Janet with NIFTP  id aa03794;
              28 Mar 89 16:38 GMT

   Generates the string:

           vs6.Cs.Ucl.AC.UK

   Note that before transferring the message to some ADMDs, additional
   trace stripping may be required, as the implied path through multiple



Kille                                                          [Page 58]