Bug#1050196: exim4: EBADF when looking up .forward files

[Andreas Metzler]

On 2023-08-23 Erik Huelsmann <ehuels at gmail.com> wrote:
> On Tue, Aug 22, 2023 at 10:17 AM Andreas Metzler <ametzler at bebt.de> wrote:
[...]
>> What do the logfiles say for this delivery?

> $ zgrep 1qTkmU-00F3DW-2D /var/log/exim4/mainlog*
> /var/log/exim4/mainlog.10.gz:2023-08-13 00:10:02 1qTkmU-00F3DW-2D internal
> problem in userforward router (recipient is ehuelsmann at common-lisp.net):
> failure to transfer data from subprocess: status=0000 readerror='Bad file
> descriptor'

That is just the mainlog. Is something in paniclog? A nearby entry
without m-id?

> > Can you tell me more about the forward files, are they
> > exim-filter ones or classic ones?

> $ cat /home/ehuelsmann/.forward
> ehuels at gmail.com
[...]

Looks like there is something really broken there. Is exim still SUID,
did you perhaps configure a apparmor policy?

cu Andreas
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