Greetings, Steve, and everyone,
Located at https://lists.postgresql.org/manage/ is a little button just
to the right of each list which you are subscribed to that says
"Sent test mail." This will send an email, just to you, with the exact
headers as the regular emails that are sent through the system.
Please use that to check that your filters have been set up correctly
for catching email and do *not* send test emails to this list.
Steve, your "test" email went to 3,717 individuals. Please don't do
that again.
Thanks!
Stephen