Lange <[EMAIL PROTECTED]> wrote on Sat, 12 Aug 2000:
>Doing so I made an interesting observation: My alternative server
>pop3.volny.cz handles the charset information completly different than
> [...]
>Content-Transfer-Encoding: 8bit
>X-MIME-Autoconverted: from Quoted-printable to 8bit by mail.volny.cz id
The above header line shows that the server software of
"mail.volny.cz" (= your ISP) does something highly illegal:
autoconversion from "Quoted-printable" to "8bit".
Such a conversion is forbidden as, aside from causing character
set problems due to lost information, it ruins every digitally
signed e-mail.
(Note: Autoconversion from "8bit" to either "Quoted-printable" or
"Base64" [= the direction from 8bit to 7bit] is legal, as
digitally signed e-mails have to be in a 7-bit-encoding anyway.
But the other direction [= from 7bit to 8bit] loses transport
information and may therefore only be done by the final
receipient's software, i.e. your MUA, and not by any provider or
gateway.)
Solution: Tell your ISP to turn off the autoconversion into 8bit,
or switch to an ISP who knows internet standards (RFCs).
- Wolfgang Redtenbacher
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