Douglas Otis wrote:
Functional regions could then be identified as follows:
MOD = Mail Originator Dominion (MUA-MSA)
Relevant for the MON, invisible for the receiver (MON interna)
MTD = Mail Transmitter Dominion (outbound)
MON border, very important
MRD = Mail Receiver Dominion (inbound)
MRN border (MX), also very important
MSD = Mail Signing Dominion (DKIM signing)
Less interesting, somewhere between MSA and "MTD"
MDD = Mail Delivery Dominion (MDA-MUA)
Relevant for the MRN, invisible for the sender (MRN interna)
MVD = Mail Validation Dominion (DKIM validation)
Less interesting, somewhere between "MRD" and "MDD"
MFD = Mail Forwarding Dominion (Normal forwarding)
Covered by mediator, combo of "MRD" and "MTD".
MMD = Mail Modification Dominion (Specialized forwarding or mailing-
Ditto, covered by mediator, the "5.3.6(b)" case.
MXD = Mail Relay Dominion (Specialized outbound)
What's that ?