On Tue, 12 Sep 2017 18:04:55 +0000 (UTC)
Tim Woodall wrote:

Tried to post this to the moderated group but got rejected:

Sep 12 17:33:07 einstein sm-mta[6709]: v8CGX5qh006707:
,
(1000/1000),
delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=122933,
relay=moderators.individual.net. [130.133.4.7], dsn=5.1.1, stat=User
unknown

Anyone know what address I should be sending post to?

You should be able to set it up and post to it as a normal un-
moderated group, and eternal-september (or whichever news service
provider you're using at the time) will forward the post for moderation.