Found 2 records.

Status: Verified (1)

RFC 6531, "SMTP Extension for Internationalized Email", February 2012

Errata ID: 7580
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Scott Hollenbeck
Date Reported: 2023-07-31
Verifier Name: Orie Steele
Date Verified: 2024-11-15

Sections 3.3 and 3.7.3 say:

The <Mailbox> ABNF rule is imported from RFC 5321 and updated in 
order to support the internationalized email address.

The following ABNF rules imported from RFC 5321, Section 4.1.2, are 
updated directly or indirectly by this document:

This document updates <Mailbox> and <Domain> to support non-ASCII 
characters.

It should say:

The <Mailbox> ABNF rule is imported from RFC 5321 and extended in 
order to support the internationalized email address.

The following ABNF rules imported from RFC 5321, Section 4.1.2, are 
extended directly or indirectly by this document:

This document extends <Mailbox> and <Domain> to support non-ASCII 
characters.

Notes:

The original text can be incorrectly interpreted to suggest that the definitions found in RFC 6531 formally update the definitions found in RFC 5321. RFC 6531 does not formally update RFC 5321. As such, a word like "extends" may be less prone to misinterpretation than "updates".

Status: Held for Document Update (1)

RFC 6531, "SMTP Extension for Internationalized Email", February 2012

Errata ID: 4996
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Vitaliy V. Tokarev
Date Reported: 2017-04-16
Held for Document Update by: Alexey Melnikov
Date Held: 2017-09-07

Section 3.3 says:

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.

It should say:

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.

Alexey Melnikov: see Ned Freed' reply and the thread that follows <https://www.ietf.org/mail-archive/web/ima/current/msg05506.html>

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