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!watmath!clyde!burl!hou3c!MRC@SU-SCORE.ARPA From: MRC@SU-SCORE.ARPA (Mark Crispin) Newsgroups: net.mail.headers Subject: Re: smtp, errors and delivery Message-ID: <369@hou3c.UUCP> Date: Mon, 5-Mar-84 16:30:58 EST Article-I.D.: hou3c.369 Posted: Mon Mar 5 16:30:58 1984 Date-Received: Wed, 7-Mar-84 07:39:11 EST Sender: ka@hou3c.UUCP (Kenneth Almquist) Lines: 19 To: don.provan@CMU-CS-A.ARPA Cc: Rudy.Nedved@CMU-CS-A.ARPA, Header-People@MIT-MC.ARPA In-Reply-To: Message from "don.provan@CMU-CS-A" of Mon 5 Mar 84 12:50:00-PST Postal-Address: 725 Mariposa Ave. #103; Mountain View, CA 94041 Phone: (415) 497-1407 (Stanford); (415) 968-1052 (residence) Don - I take the middle ground. I think it is completely alright to reject a MAIL FROM command because of a syntax error PROVIDED that the syntax parser COMPLETELY implements the standard. That includes: . all forms of quoting . source path route lists . bracketed or #'d host addresses in lieu of host names Very few SMTP servers do. I believe TOPS-20's SMTP server does (if it doesn't, it's a bug because all the code is there). I don't think an SMTP server should try to validate a host name in a MAIL FROM command other than checking it for syntactical validity. RCPT TO: is a different matter entirely. -- Mark -- -------