I’m afraid there is a possibility that your setup only works by chance …
I don’t think Dovecot LMTP is SMTPUTF8-capable according to RFC 6531. It
needs to advertise the SMTPUTF8 extension but doesn’t.
# nc -U /var/spool/postfix/private/dovecot-lmtp
220 mail.my.org Dovecot ready.
LHLO mail.my.org
2
Well, what a puzzle. I will have to investigate. I also tried it with
Gmail, and the failure was definitely between Postfix and Dovecot LMTP,
with Dovecot failing to advertise SMTPUTF8 support. My setup is much
more minimal, I use file-based virtual mailboxes and aliases, and only
OpenDKIM and Spam
André, are you quite sure you have it working?
In this thread someone from Open-Xchange stated that no, Dovecot doesn’t
have SMTPUTF8 support implemented, and the same response was given by
another Dovecot developer last September (it ‘is being considered’ was
the answer then, see
https://dovecot.
