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Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!decvax!genrad!panda!talcott!harvard!seismo!brl-tgr!tgr!Tommy_Ericson__QZ%QZCOM.MAILNET@MIT-MULTICS.ARPA
From: Tommy_Ericson__QZ%QZCOM.MAILNET@MIT-MULTICS.ARPA
Newsgroups: net.mail.headers
Subject: Domain names defaulting
Message-ID: <11024@brl-tgr.ARPA>
Date: Fri, 24-May-85 21:01:48 EDT
Article-I.D.: brl-tgr.11024
Posted: Fri May 24 21:01:48 1985
Date-Received: Sun, 26-May-85 23:34:52 EDT
Sender: news@brl-tgr.ARPA
Lines: 5

Exactly! And the most important mailers to be fixed are the ones
acting as gateways into other netoworks - compared to postal
addresses we all know that Country is only required when addressing
someone outside current country, and can well be left out while
inside. This simple analogy should hold for E-mail too.