Re: [Fetchmail-users] UTF-8 support?

[Matthias A. <mat...@gm...>]

Am 06.03.20 um 12:01 schrieb Sergey Organov:
> Hello,
>
> Does fetchmail support UTF-8 for IMAP and POP, as described in:
>
> https://tools.ietf.org/html/rfc6855
>
> and
>
> https://tools.ietf.org/html/rfc6856
>
> ?

Fetchmail is 8-bit clean, but no release in existence today sends UTF8
commands.

> I get my mail using fetchmail  and recently started to receive
> notification e-mails of the form:
>
> Subject: Cannot display Unicode content
>
> This E-mail message was determined to be Unicode-formatted
> but your E-mail reader does not support Unicode E-mail.
E-Mail UTF-8 is a different thing that protocol commands and responses
being UTF-8. But it might be that your server is creating surrogate
messages.
> Please use an E-mail reader that supports POP3 with UTF-8
> (see https://tools.ietf.org/html/rfc6856.html).
>
> This can also happen when the sender's E-mail program does not
> correctly format the sent message.

What is your mail server type and address? It might be that the server
detects "client not sending UTF-8 but non-ASCII stuff in content" and
decides "so send this warning e-mail instead of real content".

I don't have a UTF8 server to test against apparently... so this would
make debugging impossible.

> The original message is included as a separate attachment
> so that it can be downloaded manually.
>
The list strips attachments, please send it to me again off-list, but
I'd guess that this is actually a failure of the mail client or the
sender's mail client.