Posts from gmane no longer allowed?

[Grant Edwards]

I've been reading (and posting to) this list for many years by
pointing an NNTP client
at news://gmane.comp.python.general. Sometime in the past few days posts started
being refused:

    You have tried posting to gmane.comp.python.general, which is a
unidirectional
    mailing list. Gmane can therefore not send this message to that
mailing list.

Was this a change made by the mailing list admins?

If so, is it permanent?

[Trying to send a plaintext e-mail via Gmail, but not sure if it's working.]

-- 
Grant