Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site hou3c.UUCP Path: utzoo!linus!decvax!harpo!ulysses!burl!hou3c!Mishkin@YALE.ARPA From: Mishkin@YALE.ARPA (Nathaniel Mishkin) Newsgroups: net.mail.headers Subject: "Return-Path" vs. "From" Message-ID: <238@hou3c.UUCP> Date: Mon, 6-Feb-84 15:19:01 EST Article-I.D.: hou3c.238 Posted: Mon Feb 6 15:19:01 1984 Date-Received: Thu, 9-Feb-84 22:12:21 EST Sender: ka@hou3c.UUCP (Kenneth Almquist) Lines: 23 Cc: Ellis@YALE.ARPA Flame on: I just saw a message that had the following 2 header lines in it: Return-Path:From: Elaine.Newborn@CMU-CS-A.ARPA The "Return-Path" is being generated from data passed in the envelope (SMTP "MAIL FROM"). It seems to me that it's not unreasonable for the "Return-Path" to bear some resemblance to the "From", no? It's bad enough that the two addresses are sometimes trivially different: I've seen mail from many sites in which the case differs (I'm not advocating case sensitivity in user IDs, but some sites DO rely on it). But the case above seems pretty extreme. Which address am I supposed to reply to? If the answer is "either works", why can't the software arrange to give the more sensible one (I'll give you a hint about which I think is the more sensible one: it doesn't have numbers in it; bonus points: why is it ER90 instead of EN90?). -- Nat