On Fri, Aug 28, 2015 at 05:59:08PM +0200, Per olof Ljungmark wrote:
> Yes, that helped with Thunderbird but not from Horde/IMP where it still
> bounces the same way.
>
> The difference seems to be that IMP sends a
> "Content-Transfer-Encoding: quoted-printable"
>
> and TB
> "Content-Transfer-Encoding: 8bit"
>
> Could this be the cause?
Yes, if IMP sends data claimed to be quoted-printable, but contaning
unencoded non-ASCII characters.
You'll need to capture a sample message and find the violation.
--
Viktor.
