(Feature request) Unicode emails

[arokettu]

Please add support for unicode email addresses.

Judging that using telnet I can send them anyway, the only thing missing is the SMTPUTF8 capability:

MAIL FROM: <test@example.com>
250 2.1.0 Ok
RCPT TO: <проверка@тест.тест>
250 2.1.5 Ok
DATA
354 Start mail input; end with <CR><LF>.<CR><LF>
Subject: Hi!

Hello!
.
250 2.0.0 Ok: queued as m5H2YVXDKnCS2DqsYzEEuk

However it would also be nice to have it configurable

[axllent]

Hi there. To help me understand where this support is missing, can you please be a bit more specific? You're able to send successfully, but then what happens (or is not happening)?

[axllent]

It appears to work for me:

[arokettu]

If you try that with an actual client, you get an error

Same with Symfony:

https://github.com/symfony/mailer/blob/998692469d6e698c6eadc7ef37a6530a9eabb356/Transport/Smtp/EsmtpTransport.php#L200

You can see the required response line in your postfix example here:

#130 (comment)

[axllent]

Oh I understand now, it's not the SMTP server does not process the email correctly, it is that the email client refuses to send the email because the SMTP server does not specifically state that it supports SMTPUTF8.

OK, leave this with me and I'll fix this in the next day or two. Thanks.

[arokettu]

Correct, thank you

[axllent]

This fix has now been released in v1.25.0. Please can you let me know if this fixes your issue? Thanks.

[arokettu]

Yes, I can confirm that my problem is fixed