On 07/06/2021 01:10 pm, Andy Burns wrote:

AnthonyL wrote:

3) SMPT is not used in Usenet

It can be for moderated groups (but that doesn't apply here)

Oddly... it was in a moderated group that the problem manifested itself.
I'd already successfully posted in two other groups (alt.test and a
disused uk.rec.* group).

Something seems to have fixed it though.