Re: [EAI] [Technical Errata Reported] RFC6531 (4996)
"Jiankang Yao" <yaojk@cnnic.cn> Tue, 18 April 2017 06:28 UTC
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Date: Tue, 18 Apr 2017 14:27:42 +0800
From: Jiankang Yao <yaojk@cnnic.cn>
To: RFC Errata System <rfc-editor@rfc-editor.org>, "maowei_ietf@cnnic.cn" <maowei_ietf@cnnic.cn>, ben <ben@nostrum.com>, alissa <alissa@cooperw.in>, aamelnikov <aamelnikov@fastmail.fm>, John C Klensin <john-ietf@jck.com>, jyee <jyee@afilias.info>
Cc: "vitaliy.tokarev" <vitaliy.tokarev@gmail.com>, ima <ima@ietf.org>, rfc-editor <rfc-editor@rfc-editor.org>
Reply-To: yaojk <yaojk@cnnic.cn>
References: <20170416203054.74AB5B8190E@rfc-editor.org>
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Subject: Re: [EAI] [Technical Errata Reported] RFC6531 (4996)
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Hello all, Thanks a lot for Vitaliy V. Tokarev's suggested possible Errata based on the sentence below "The definition of <atext> is extended to permit both the RFC 5321 definition and a UTF-8 string. That string MUST NOT contain any of the ASCII graphics or control characters." My personal feeling is that it might not be an Errata. The term "UTF-8 string " is used everywhere in EAI RFCs, for examples 1)In section 7.1 RFC6530, which said " Permits the use of UTF-8 strings in email addresses, both local parts and domain names." 2)In section 3.2 RFC6531, which said " An SMTP server that announces the SMTPUTF8 extension MUST be prepared to accept a UTF-8 string [RFC3629] in any position in which RFC 5321 specifies that a <mailbox> can appear." So we have this sentence "The definition of <atext> is extended to permit both the RFC 5321 definition and a UTF-8 string. " It means that <atext> allows both RFC 5321 definition and a UTF-8 string. Since UTF-8 string includes both non-ASCII UTF-8 and ASCII UTF-8, some readers may mis-understand that <atext> can allow some ASCII graphics or control characters. In order to emphasize that <atext> does not allow any of the ASCII graphics or control characters, we add this sentence "That string MUST NOT contain any of the ASCII graphics or control characters." Because "UTF-8 string " is used everywhere in EAI RFCs, in order to avoid the possible misunderstanding, I remembered that the WG suggested to add this sentence " That string MUST NOT contain any of the ASCII graphics or control characters." when discussing this issue. Since the formal <atext> syntax is clearly defined, I think that this sentence "The definition of <atext> is extended to permit both the RFC 5321 definition and a UTF-8 string. That string MUST NOT contain any of the ASCII graphics or control characters." will not cause any problems, and it will help the readers to understand the formal <atext> syntax and avoid the possible misunderstanding. I hope that this clarification is clear. Thanks a lot. Jiankang Yao From: RFC Errata System Date: 2017-04-17 04:30 To: yaojk; maowei_ietf; ben; alissa; aamelnikov; john-ietf; jyee CC: vitaliy.tokarev; ima; rfc-editor Subject: [Technical Errata Reported] RFC6531 (4996) The following errata report has been submitted for RFC6531, "SMTP Extension for Internationalized Email". -------------------------------------- You may review the report below and at: http://www.rfc-editor.org/errata_search.php?rfc=6531&eid=4996 -------------------------------------- Type: Technical Reported by: Vitaliy V. Tokarev <vitaliy.tokarev@gmail.com> Section: 3.3 Original Text ------------- The definition of <atext> is extended to permit both the RFC 5321 definition and a UTF-8 string. That string MUST NOT contain any of the ASCII graphics or control characters. Corrected Text -------------- The definition of <atext> is extended to permit both the RFC 5321 definition and a UTF-8 string. That string MUST NOT contain any of the Extended ASCII graphics (%d128-255) or control characters. Notes ----- The question is: what is "ASCII graphics characters"? Either meant that is possible to transmit 8bit characters, but they should not be in range %d128-255. Or something else. A better clarification is appreciated. Instructions: ------------- This erratum is currently posted as "Reported". If necessary, please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party can log in to change the status and edit the report, if necessary. -------------------------------------- RFC6531 (draft-ietf-eai-rfc5336bis-16) -------------------------------------- Title : SMTP Extension for Internationalized Email Publication Date : February 2012 Author(s) : J. Yao, W. Mao Category : PROPOSED STANDARD Source : Email Address Internationalization Area : Applications Stream : IETF Verifying Party : IESG
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… ned+ima
- [EAI] [Technical Errata Reported] RFC6531 (4996) RFC Errata System
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… Jiankang Yao
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… ned+ima
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… Vitaliy T
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… John C Klensin
- Re: [EAI] [Technical Errata Reported] RFC6531 (49… Vitaliy T