On 19.11.2013 07:29, A.L.E.C wrote:

On 11/19/2013 03:46 PM, Simon Loewenthal wrote:

CONTENT-TRANSFER-ENCODING: 7BIT CONTENT-TYPE: TEXT/PLAIN; CHARSET=UTF-8 with this CONTENT-TRANSFER-ENCODING: QUOTEABLE-PRINTABLE CONTENT-TYPE: TEXT/PLAIN; CHARSET=UTF-8 or this if its certain its only text CONTENT-TRANSFER-ENCODING: 7BIT CONTENT-TYPE: TEXT/PLAIN; CHARSET=ASCII

So, are you saying that a message can't be "described" as 7bit and
charset=utf-8 even if it contains only ascii characters? Sounds like
bullshit. Maybe it contains some non-printable/malformed chars but I
don't see them in the provided sample.

"7 bit transfer encoding" with "charset UTF-8" is nonsensical, regardless of whether or not byte values > 0x7F actually occur in the data.

The receiving end is fairly justified in rejecting this and complaining loudly.