On 22-09-18 21:26, Paul Hayton wrote:
> The Date: field contains the correct local time when I posted this via the
> gateway (minus the +1200 it should (I still reckon) be flying too.)

No. Without the timezone it is invalid and meaningless. Your date header
in the post I'm replying to here says: "Date: Sat, 22 Sep 2018 21:26:25"
which is still in the future in my timezone. So it gets sorted wrongly.
When using references headers (which apparently are not always reliable
either in your gateway because I see a couple of orphaned replies from
you) the whole thread gets sorted upfront because one of the replies is
supposedly newer than anything else.

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