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Re: [ietf-smtp] sm8: bogus SMTPUTF8? (was: How is EAI mail implemented ?)

2021-06-16 16:17:41
It appears that Claus Assmann  <ietf-smtp(_at_)ietf(_dot_)org> said:
On Wed, Jun 16, 2021, John Levine wrote:

It was locally injected with "sendmail 

Do you still have that "shim" (mentioned in a usenet posting)?

Good thinking, but I got rid of the shim, typed a test message with the Mail 
command, same result:

Received: from xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 
  by ([IPV6:2001:470:1f07:1126:33:5370:616d:6d31])
  with UTF8SMTPS via TCP6 (port 22912/25) id 678041815
  tls TLS1_3_ECDHE_RSA_AES_256_GCM_AEAD; 16 Jun 2021 21:12:44 -0000
Received: from xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (localhost 
    by xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s ( 
with UTF8SMTPS id 15GLChW5086678
    (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO)
    for <johnl(_at_)iecc(_dot_)com>; Wed, 16 Jun 2021 21:12:43 GMT
Received: (from johnl@localhost)
    by xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 
( id 15GLChpK086677
    for johnl(_at_)iecc(_dot_)com; Wed, 16 Jun 2021 21:12:43 GMT
    (envelope-from johnl)
Date: Wed, 16 Jun 2021 21:12:43 GMT
From: John L 
To: johnl(_at_)iecc(_dot_)com
Subject: a boring little message


Perhaps the A-labels in the domain name are confusing it?

In any event, I think you will find that expecting the users to tell
you when a message needs EAI handling rather than figuring it out when
it does the submission cleanup will cause endless pain. Neither
postfix nor exim have anything like the -U flag.


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