Having done this and looking at all the timestamps that appear in the trace log relative to the exim mainlog I think I can safely conclude that these emails never make their way to my filter. since none of the timestamps are lining up for the offending emails when they are processed.
> On Jun 1, 2023, at 5:14 AM, Evgeniy Berdnikov via Exim-users <exim-users@???> wrote:
>
> Hi.
>
> On Wed, May 31, 2023 at 09:56:25AM -0500, Robert Nicholson via Exim-users wrote:
>> Does anybody have any more ideas as to how I investigate this
>> further since I don’t have debug as I’m not an admin and the folks
>> responsible for the exim build claim that this is all due to the
>> fact that I’m using a custom filter which I am but it’s understood
>> that my filter itself couldn’t be responsible for the errors I’m
>> seeing when things error.
> ...
>> pipe "nice -10 $home/perlscripts/filter.pl"
>
> If you can modify this filter.pl (I assume it's your own script),
> use a wrapper with strace/ltrace utilities to log syscalls.
>
> Your error message is 'No such file or directory', so pay attention
> to file-related syscalls, such as open(2)/openat(2).
> --
> Eugene Berdnikov
>
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