Re: [EAI] Rather serious bug in RFC 6531

John R Levine <johnl@taugh.com> Tue, 05 January 2021 14:17 UTC

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Date: 5 Jan 2021 09:17:42 -0500
Message-ID: <a01486ed-5d6f-577a-3237-bb7361c71d43@taugh.com>
From: "John R Levine" <johnl@taugh.com>
To: "Ned Freed" <ned.freed@mrochek.com>
Cc: ima@ietf.org
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Subject: Re: [EAI] Rather serious bug in RFC 6531
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On Mon, 4 Jan 2021, Ned Freed wrote:
>> Having just done some EAI compliance tests for the UASG, I can report
>> that all the systems that have any EAI support at all do what the RFC
>> says. The SMTP keyword is SMTPUTF8, and the WITH clause is UTF8SMTP.
>> (Well, except for Microsoft whose WITH clauses are wrong with or
>> without EAI.)
>
> FWIW, we generate the entire list of values: UTF8SMTP[A][S] and UTF8LMTP[A][S]
> as necessary.

I think everyone else does, too.  The code is pretty simple. replace the 
prefix E with UTF8.

There's a buglet in Courier where he forgets to remove the E, e.g., 
UTF8ESMTPS.  I think I sent him the one-line fix.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly