Re: [apps-discuss] Trace headers, was Adoption of draft-kucherawy-received-state?
"John R. Levine" <johnl@iecc.com> Sun, 15 January 2012 03:55 UTC
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From: "John R. Levine" <johnl@iecc.com>
To: John C Klensin <john-ietf@jck.com>
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Cc: apps-discuss@ietf.org
Subject: Re: [apps-discuss] Trace headers, was Adoption of draft-kucherawy-received-state?
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>> http://www.iana.org/assignments/mail-parameters, but as far as >> I can tell, there's no registry of trace headers. > > There is no registry of trace headers because there are, and > have been since RFC 821, only two of them: "Received:" and > "Return-path:". If you believe what the RFCs say, there are many more trace headers than those two. RFC 5322 makes a special case of Resent-foo: fields, but they act an awful lot like trace headers. RFC 5451 says that Authentication-Results "should be treated as a Trace Field." RFC 5436 says "The 'Auto-Submitted' header field is considered a 'trace field'". RFC 4408 says that "The Received-SPF header field is a trace field." RFC 5518 says "VBR-Info is a 'trace header field'". That horse left the barn a long time ago. RFC 5537 also lists a bunch of trace fields for usenet, which isn't mail, but it might be a good idea to reserve them to avoid collisions. > I'm suggesting that the time may have come to > add one or more rather than continuing to overload "Received:". It's certainly time for a trace field registry. And I suppose that if we have one, adding new trace fields isn't that big a deal. R's, John
- [apps-discuss] Adoption of draft-kucherawy-receiv… Murray S. Kucherawy
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Murray S. Kucherawy
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Dave CROCKER
- Re: [apps-discuss] Adoption of draft-kucherawy-re… SM
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John C Klensin
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John Levine
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Dave CROCKER
- Re: [apps-discuss] possibleTrace fields registry Dave CROCKER
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John C Klensin
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Dave CROCKER
- Re: [apps-discuss] Trace headers, was Adoption of… John R. Levine
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Murray S. Kucherawy
- Re: [apps-discuss] Trace headers, was Adoption of… SM
- Re: [apps-discuss] Adoption of draft-kucherawy-re… SM
- Re: [apps-discuss] Trace headers, was Adoption of… John C Klensin
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Ned Freed
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Alessandro Vesely
- [apps-discuss] possibleTrace fields registry Dave CROCKER
- Re: [apps-discuss] Trace headers, was Adoption of… Dave CROCKER
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Ned Freed
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John Levine
- Re: [apps-discuss] Trace headers, was Adoption of… John Levine
- Re: [apps-discuss] possibleTrace fields registry John Levine
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Ned Freed
- Re: [apps-discuss] possibleTrace fields registry Ned Freed
- Re: [apps-discuss] possibleTrace fields registry Dave CROCKER
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Tony Finch
- Re: [apps-discuss] possibleTrace fields registry John Levine
- Re: [apps-discuss] possibleTrace fields registry Ned Freed
- Re: [apps-discuss] possibleTrace fields registry Murray S. Kucherawy
- Re: [apps-discuss] possibleTrace fields registry Dave CROCKER
- Re: [apps-discuss] possibleTrace fields registry Alessandro Vesely
- Re: [apps-discuss] possibleTrace fields registry Nico Williams
- [apps-discuss] Draft for trace fields registry John Levine
- Re: [apps-discuss] Draft for trace fields registry Ned Freed
- Re: [apps-discuss] Draft for trace fields registry S Moonesamy
- Re: [apps-discuss] Draft for trace fields registry Murray S. Kucherawy
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John C Klensin
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Murray S. Kucherawy
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John C Klensin
- Re: [apps-discuss] Adoption of draft-kucherawy-re… SM
- Re: [apps-discuss] Adoption of draft-kucherawy-re… SM
- Re: [apps-discuss] Adoption of draft-kucherawy-re… Ned Freed
- Re: [apps-discuss] Adoption of draft-kucherawy-re… John C Klensin
- [apps-discuss] Stanzas of trace fields, was Adopt… Alessandro Vesely