Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!decvax!decwrl!ucbvax!ISI-VENERA.ARPA!JOEL From: JOEL@ISI-VENERA.ARPA.UUCP Newsgroups: mod.protocols.tcp-ip Subject: Re: {8605.0428} oh mr. postman ... Message-ID: Date: Tue, 27-May-86 19:53:11 EDT Article-I.D.: Posted: Tue May 27 19:53:11 1986 Date-Received: Wed, 28-May-86 19:24:11 EDT References: Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 15 Approved: tcp-ip@sri-nic.arpa The rejection you are getting is from our SMTP receiver, which (like most mailers) does not parse either the headers or the text of the message. It responds only to the SMTP control lines to form both the return-path line and the received: line. It doesn't like the host specification in the MAIL FROM:<...> SMTP control line. It doesn't care what is sent after the DATA SMTP control line (which is where the "Reply-To: " line is). There are no hard rules on this and our implementation chooses to reject mail where the only host specified is unknown. UNIX is not so rigorous, it will accept mail from (or for) any host whether it exists or not, and will then have no way of informing anyone but the mail system maintainer that there is a problem. We like the TOPS-20 system better where the originator has to resolve the problem. - Joel - -------