Received: from localhost (daemon@localhost) by CS.UTK.EDU with SMTP (cf v2.9s-UTK) id QAA17035; Wed, 5 Aug 1998 16:11:15 -0400 (EDT) Received: by cs.cs.utk.edu (bulk_mailer v1.10); Wed, 5 Aug 1998 16:10:34 -0400 Received: by CS.UTK.EDU (cf v2.9s-UTK) id QAA16933; Wed, 5 Aug 1998 16:10:33 -0400 (EDT) Received: from info.dsv.su.se (info.dsv.su.se [130.237.161.221]) by CS.UTK.EDU with ESMTP (cf v2.9s-UTK) id QAA16893; Wed, 5 Aug 1998 16:10:23 -0400 (EDT) Received: from [130.237.150.138] (jph1.dsv.su.se [130.237.150.138]) by info.dsv.su.se (8.8.8/8.8.8) with ESMTP id WAA24793; Wed, 5 Aug 1998 22:10:19 +0200 (MET DST) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Sender: jpalme@mail.dsv.su.se Message-Id: In-Reply-To: References: <19980728224642.1982.qmail@cr.yp.to> Date: Wed, 5 Aug 1998 22:00:24 +0200 To: Philip Hazel , drums@cs.utk.edu From: Jacob Palme Subject: Re: relaying and gatewaying At 11.20 +0200 98-07-29, Philip Hazel wrote: > There are three binary variables: > > (1) Mail protocol: SMTP or not SMTP > (2) Message format: 822 or not 822 > (3) Transport service in/out: same or not same Also note that the division of responsibility between envelope and header differes between protocols. The Return-Path and Received headers are headers in Internet e-mail, but the corresponding information is in the envelope in X.400. There are even protocols which do not differentiate between header and envelope at all. ------------------------------------------------------------------------ Jacob Palme (Stockholm University and KTH) for more info see URL: http://www.dsv.su.se/~jpalme