Re: [apps-discuss] draft-kucherawy-rfc5451bis

"Murray S. Kucherawy" <superuser@gmail.com> Fri, 22 March 2013 19:22 UTC

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Date: Fri, 22 Mar 2013 12:22:43 -0700
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From: "Murray S. Kucherawy" <superuser@gmail.com>
To: Alessandro Vesely <vesely@tana.it>
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Subject: Re: [apps-discuss] draft-kucherawy-rfc5451bis
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I've revised the grammar in the next draft to avoid this ambiguity.  Let me
know if it works.  Essentially, "dot-atom" has been replaced by "value",
which disallows the case you've illustrated here.


On Sun, Mar 17, 2013 at 2:18 AM, Alessandro Vesely <vesely@tana.it> wrote:

> On Sat 16/Mar/2013 19:43:37 +0100 Dave Cridland wrote:
> > On 16 Mar 2013 08:59, "Alessandro Vesely" <vesely@tana.it> wrote:
> >>
> >> Oops, I overlooked that "[ CFWS version ]" in authres-header.  Thus
> >> you helped me catch a bug.  Thanks!
> >>
> >
> > That was even the one that was properly specified... it's the other
> > one I'm more concerned with.
>
> "Properly" might be something of an overstatement.  Section 2.3 says:
>
>  For tracing and debugging purposes, the authentication identifier MAY
>  instead be the hostname of the MTA performing the authentication
>  check whose result is being reported.  This is also useful for
>  another purpose, as described in Section 4.  Moreover, some
>  implementations have considered appending a delimiter such as "/" and
>  following it with useful transport tracing data such as the [SMTP]
>  queue ID or a timestamp.
>
> Informal discussions like that tend to be ambiguous because "/" is
> allowed in dot-atom.  Hence one doesn't know whether the text means
> something like:
>
>   server.example.com/Q304b5 / 1
>
> or:
>
>   server.example.com / 197813
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