Received: from localhost (daemon@localhost) by CS.UTK.EDU with SMTP (cf v2.9s-UTK) id RAA13481; Thu, 13 Feb 1997 17:51:16 -0500 Received: by CS.UTK.EDU (bulk_mailer v1.7); Thu, 13 Feb 1997 17:48:32 -0500 Received: by CS.UTK.EDU (cf v2.9s-UTK) id RAA13087; Thu, 13 Feb 1997 17:48:30 -0500 Received: from chrome.office.aol.com (chrome.office.aol.com [152.163.67.244]) by CS.UTK.EDU with ESMTP (cf v2.9s-UTK) id RAA13071; Thu, 13 Feb 1997 17:48:24 -0500 Received: from localhost (brad@localhost) by chrome.office.aol.com (8.8.5/8.8.5/AOL-0.0.7) with ESMTP id RAA18954; Thu, 13 Feb 1997 17:47:46 -0500 (EST) Message-Id: <199702132247.RAA18954@chrome.office.aol.com> X-Mailer: exmh version 2.0gamma 1/27/96 Reply-To: KnowlesB@aol.net Organization: America Online, Inc. X-Telefacsimile: (703) 453-4013 X-PGP-Fingerprint: DA 2A 59 B1 A8 BD 4C B2 B0 41 CE 6E BD C3 15 54 X-Face: "HJz{@e(gkOmJfq8b$n:zW8Kk4*`Sz1?<#`g=5p>Wuu7DkDV`m-*p[Yb=?;w(F:L'DHA{mO]=iKKKdH)r%I7K;dvYQ{3Y6"3MW@Y*U_6?>lOw;GIva\?7579Ii|/$t"\+lE cc: drums@cs.utk.edu Subject: Re: Accepting source routes? In-reply-to: Your message of "Thu, 13 Feb 1997 16:28:18 EST." <199702132128.QAA24855@ig.cs.utk.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 13 Feb 1997 17:47:45 -0500 From: Brad Knowles Your message dated: Thu, 13 Feb 1997 16:28:18 EST > I don't want to completely deprecate source routes; they're still > useful in limited cases. > > I do think that sites have the right not to relay mail for domains > that they're not an MX for, whether the address is source-routed or > not. Look at my original post again -- I'm asking for the right to refuse to accept mail whose *sender* address includes source routes. Like you, I don't want to necessarily deprecate them completely (a site should still be allowed to accept them if they choose), but I would like to be allowed to refuse them if I so choose. > Seems like the rule is simple: > > 1. For non-source-routed addresses, an SMTP server MAY refuse to > accept a message for any recipient in a domain for which the SMTP > server is not a mail exchanger. Correct -- the right to refuse to act as a relay for non-local domains. The right to strip source routing for recipients is already provided in RFC 1123, at least the way I read it. Since we have no local domains here where recipients could be reached through either local-part or host-part source routing, we would likewise refuse to accept mail for recipients with either kind of route in their address. I didn't make this explicit in my original post, I was kind of assuming I could throw away all source routes for recipients, and then if the recipient wasn't "local", apply the "refuse to be a relay" right. That leaves the right to refuse to accept mail that has a source-routed sender address. -- Brad Knowles MIME/PGP: KnowlesB@aol.net Internet Mail Operations Technical Lead, for America Online, Inc.