Hi Mark. I have no idea if that file exists. As far as I can see, it cannot exist. It must be some virtual file. And it would have to be created by Mailman3 just for a short moment, for Exim to pick it up. It looks very weird to me, but the old Mailman 2.1 worked in the same way.... and I can no longer see how that would have worked as it has been wiped out by the OS upgrade. And yes, I generated the mailing list as (from memory) : mailman3 create templist@sartrack.nz templist.lists.sartrack.nz (?) I tried to create it as: create templist@sartrack.nz templist@sartrack.nz but it would not accept that. This all was done while I war trying to *import* the existing list, but this keeps failing with a 'mailing list does not exist' until I after much Googling found a comment somewhere that I first has to Create a list (not to be found in any documentation).
Somehow Mailman must create this weird file for Exit to be able to read it, and then it would have to dissapear, because it makes no sence if that file would be sitting in the mail 'lists' directory. I do not understand this system at all.