According to Claus Assmann <ietf-smtp(_at_)ietf(_dot_)org>:
On Tue, Jun 15, 2021, John R Levine wrote:
Huh. Why does it set the UTF8 flag on MAIL FROM when sending ASCII messages?
I could look at it if you specify how to reproduce that (without
having to install lots of things for some test suite) -- did you
use the -U flag by chance?
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 thought it might be the -U flag but I checked and that test doesn't set ut.
Jun 16 16:09:06 xn--5nq21jyu9d1ta sendmail[85985]: 15GG96Ga085985:
Authentication-Warning: localhost.my.domain: eaitest set sender to
user1(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s
using -f
Jun 16 16:09:06 xn--5nq21jyu9d1ta sendmail[85985]: 15GG96Ga085985:
from=user1(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s,
size=323, class=0, nrcpts=1,
msgid=<202106161609(_dot_)15GG96Ga085985(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>,
relay=eaitest@localhost
Jun 16 16:09:07 xn--5nq21jyu9d1ta sendmail[85985]: STARTTLS=client,
relay=[127.0.0.1], version=TLSv1.3, verify=FAIL, cipher=TLS_AES_256_GCM_SHA384,
bits=256/256
Jun 16 16:09:07 xn--5nq21jyu9d1ta sm-mta[85986]: STARTTLS=server,
relay=localhost [127.0.0.1], version=TLSv1.3, verify=NO,
cipher=TLS_AES_256_GCM_SHA384, bits=256/256
Jun 16 16:09:07 xn--5nq21jyu9d1ta sm-mta[85986]: 15GG96OH085986:
from=<user1(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>,
size=856, class=0, nrcpts=1,
msgid=<202106161609(_dot_)15GG96Ga085985(_at_)xn--5nq21jyu9d1ta(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>,
proto=UTF8SMTPS, daemon=IPv4, relay=localhost [127.0.0.1]
Jun 16 16:09:07 xn--5nq21jyu9d1ta sendmail[85985]: 15GG96Ga085985:
to=atest(_at_)xn--fct(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s,
delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30323, relay=[127.0.0.1]
[127.0.0.1], dsn=2.0.0, stat=Sent (15GG96OH085986 Message accepted for delivery)
Jun 16 16:09:07 xn--5nq21jyu9d1ta sm-mta[85988]: STARTTLS=client,
relay=mail1.iecc.com., version=TLSv1.3, verify=FAIL,
cipher=TLS_AES_256_GCM_SHA384, bits=256/256
Jun 16 16:09:08 xn--5nq21jyu9d1ta sm-mta[85988]: 15GG96OH085986:
to=<atest(_at_)xn--fct(_dot_)xn--5nqx41au4nqohsp3axcg(_dot_)xn--fiqs8s>,
delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=30856, relay=mail1.iecc.com.
[IPv6:2001:470:1f07:1126:33:5370:616d:6d31], dsn=2.6.0, stat=Sent (Accepted
message qp 24085 bytes 1975)
--
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Primary Perpetrator of "The Internet
for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly
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