Dave Crocker wrote: > Anyone would does not like it is encouraged to suggest one > that other folks will like better. I like Keith's terms MON / MRN (mail originating / receiving networks) better, because seen as sets of systems they can be different. An outsourced backup MX would be still a part of the "MRN" (if I got this right), but not belong to the same "COG". MUAs also belong to one or more MONs / MRNs, but not necessarily to the same "COG" as the correponding MSA / MDA. Maybe I miss something with your new term (?) Bye, Frank _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf