On Wed, Jun 16, 2021, John Levine wrote:
Huh. Why does it set the UTF8 flag on MAIL FROM when sending ASCII
messages?
It was locally injected with "sendmail
-fuser1(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s
atest(_at_)xn--fct(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s"
I can't reproduce that - the sink does not receive an SMTPUTF8 argument:
EHLO seven.dev-lab.TLD
250-local.host ESMTP Hi there
250-SMTPUTF8
250-8BITMIME
250 HELP
MAIL
From:<user1(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>
250 Ok
RCPT To:<atest(_at_)xn--fct(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>
250 Ok
DATA
If SMTPUTF8 is not given during submission, then it will only be
added if one of the envelope addresses is rewritten to a non-ASCII
format during processing, e.g., using aliases -- it's easy to
see that in the code:
fgrep 'smtputf8 = true' *.[ch]
If you can provide all the required information to reproduce the
problem, please send it to the sendmail support address.
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