Subject: [spfbis] [Errata Verified] RFC7208 (5436)

From: RFC Errata System <[email-masked]>
Date: Mon, 26 Nov 2018 10:23:43 -0800 (PST)

The following errata report has been verified for RFC7208,
"Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1". 

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You may review the report below and at:
http://www.rfc-editor.org/errata/eid5436

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Status: Verified
Type: Technical

Reported by: Peter Occil <[email-masked]>
Date Reported: 2018-07-23
Verified by: Alexey Melnikov (IESG)

Section: GLOBAL

Original Text
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    header-field     = "Received-SPF:" [CFWS] result FWS [comment FWS]
                       [ key-value-list ] CRLF

Corrected Text
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    header-field     = "Received-SPF:" [CFWS] result [ FWS comment ]
                       [ FWS key-value-list ] [FWS] CRLF

Notes
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As specified, this ABNF doesn't allow a header field value like result-FWS-comment with no FWS or key-value-list following it, a header field value which occurs very often in Received-SPF header fields I see in practice.  (Note that FWS must contain at least one white space.)  The corrected ABNF better follows practice in implementations.

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RFC7208 (draft-ietf-spfbis-4408bis-21)
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Title               : Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1
Publication Date    : April 2014
Author(s)           : S. Kitterman
Category            : PROPOSED STANDARD
Source              : SPF Update
Area                : Applications
Stream              : IETF
Verifying Party     : IESG