Debian Buster, exim4 4.92-8+deb10u1
In sender address a unicode (U+FEFF) character (Zero Width No-Break Space (BOM,
ZWNBSP))
2019-07-23 18:17:07 1hpxTO-0005QR-9B <= Kevin<feff>[email protected] H=(losaass.it) [193.106.43.215]
I=[193.197.165.21]:25
2019-07-23 18:17:07 1hpxTO-0005QR-9B => xxx <[email protected]>
2019-07-23 18:17:07 1hpxTO-0005QR-9B ** [email protected] R=sophos T=remote_smtp H=10.157.x.x
I=[193.197.165.21] X=TLS1.2:RSA_AES_256_GCM_SHA384:256 CV=no: SMTP error from remote mail server
after pipelined MAIL FROM:<Kevin\357\273\[email protected]> SIZE=10231: 500 non-US-ASCII
characters are not allowed in SMTP commands
Next Hop, a Sophos UTM, rejects sender, Exim does not?
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