Re: [exim] Pulling out my hair!

On 2019-10-31 Mark Elkins via Exim-users <exim-users@???> wrote:
> Hi folks,

> I'm pulling out my hair... I have a strange e-mail problem. I'm hoping this
> community can help.

> I run an ISP in South Africa. Servers are all Linux Gentoo. I use EXIM and
> Courier-IMAP/POP to deliver emails to about 3000 users using about 400
> different domain names. From Monday the 28th October, a few clients - 10 so
> far - are sometimes getting the following....


> > Begin forwarded message:
> >
> > *From: *Mail Delivery Subsystem <postmaster>
> > *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.
[...]

The error seems to be generated by courier. It can be found in its
sourcecode:

https://sourceforge.net/p/courier/courier-libs.git/ci/master/tree/imap/pop3dserver.c#l654

cu Andreas