RE: [Asrg] TitanKey and "white lies"... (Faking SMTP hard errors "improves" C/R utility?)
Vernon Schryver <vjs@calcite.rhyolite.com> Fri, 30 May 2003 02:31 UTC
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From: Vernon Schryver <vjs@calcite.rhyolite.com>
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To: asrg@ietf.org
Subject: RE: [Asrg] TitanKey and "white lies"... (Faking SMTP hard errors "improves" C/R utility?)
References: <01C3262E.F6068780.eric@infobro.com>
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Date: Thu, 29 May 2003 20:28:51 -0600
> From: "Eric D. Williams" <eric@infobro.com> > ... >IMHO the only relevant header information to determine 'sender' forgery is the > Return-Path: field reported by the receiving server. In this case I am > referring to the receiver that is presented at the recipient border that > interacts with the 'spamming' system or (if headers are not munged and are > legitimately preserved as recommended RFC2822 and RFC822) by the terminating > end of the store-and-forward message transfer. I'm having trouble matching those words with the middle of page 50 and continuing through page 51, section 4.4 of RFC 2821. RFC 2821 seems to me to say that the Return-Path header is ought to be a copy of the envelop Mail_From value. For example, 'the delivery SMTP server makes the "final delivery"' doesn't sound like "the receiver that is presented at the recipient border that interacts with the 'spamming' system." Notice the text at the top of page 51: any further (forwarding, gateway, or relay) systems MAY remove the return path and rebuild the MAIL command as needed to ensure that exactly one such line appears in a delivered message. In other words, I not happy with such talk about the Return-Path header. As far as I can see, what matters is the value that is supposed to be copied from the envelope Mail_From command to the Return-Path line. Vernon Schryver vjs@rhyolite.com _______________________________________________ Asrg mailing list Asrg@ietf.org https://www1.ietf.org/mailman/listinfo/asrg
- [Asrg] RE: TitanKey and "white lies"... (Faking S… Peter Kay
- Re: [Asrg] RE: TitanKey and "white lies"... (Faki… Richard Rognlie
- RE: [Asrg] RE: TitanKey and "white lies"... (Faki… Bob Wyman
- RE: [Asrg] RE: TitanKey and "white lies"... (Faki… Peter Kay
- Re: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] RE: TitanKey and "white lies"... (Faki… Peter Kay
- Re: [Asrg] TitanKey and "white lies"... (Faking S… Eric Brunner-Williams in Portland Maine
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Bob Wyman
- RE: [Asrg] RE: TitanKey and "white lies"... (Faki… Peter Kay
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Peter Kay
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Bob Wyman
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Peter Kay
- Re: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric Dean
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- Re: [Asrg] TitanKey and "white lies"... (Faking S… Eric Brunner-Williams in Portland Maine
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Scott Nelson
- [Asrg] The level of discourse has degenerated... … Bob Wyman
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Peter Kay
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Barry Shein
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric Dean
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric D. Williams
- Re: [Asrg] TitanKey and "white lies"... (Faking S… kent
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- Re: [Asrg] TitanKey and "white lies"... (Faking S… waltdnes
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Bob Wyman
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Vernon Schryver
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Yakov Shafranovich
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Eric Dean
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Scott Nelson
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Peter Kay
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Vernon Schryver
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… mathew
- [Asrg] Xircom Patent (was TitanKey etc.) Yakov Shafranovich
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Scott Nelson
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Vernon Schryver
- RE: [Asrg] Re: TitanKey and "white lies"... (Faki… Eric D. Williams
- RE: [Asrg] TitanKey and "white lies"... (Faking S… Peter Kay
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Scott Nelson
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Vernon Schryver
- RE: [Asrg] Re: TitanKey and "white lies"... (Faki… Eric D. Williams
- Re: [Asrg] Re: TitanKey and "white lies"... (Faki… Scott Nelson