Re: [apps-discuss] Trace headers, was Adoption of draft-kucherawy-received-state?

"John Levine" <> Sun, 15 January 2012 20:16 UTC

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Date: 15 Jan 2012 20:16:13 -0000
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From: "John Levine" <>
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Subject: Re: [apps-discuss] Trace headers, was Adoption of draft-kucherawy-received-state?
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>> 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.
>I don't have any problem with such a registry.  It seems to me
>that you've done most of the work of identifying what should be
>in it.  Personally, I'd rather see either separate subregistries
>for MTA and MUA trace info or a field that distinguishes the
>former from the latter.  Do you want to generate the I-D?  I'm
>happy to review and/or help as needed.

Sure.  My list above was generated using my favorite semantic analysis
tool, grep, on my directory full of RFCs.

I sort of see your distinction between MTA and MUA headers, although I
don't see anything in the list other than Resent-* that strikes me as
something an MUA would do.  The closest is Auto-Submitted: for SIEVE
mailto: notifications, something that's in the MDA or maybe MSA.