Problem with list subscription?

[Peter Schober]

* Strickland, David R <dstrickland at austin.utexas.edu> [2017-02-03 17:43]:
> I have a coworker (Cartwright, Mark A <mcartwright at austin.utexas.edu>) who's
> trying to subscribe to this list. He's sent several emails to the
> subscription list over the last few days and used the web subscription form.
> Does it take some time for new members to get approved? I want to make sure
> that everything's functioning normally, as I'm not sure whether the process
> is automated.

At least https://shibboleth.net/mailman/listinfo/users does not
mention any administrative steps:
"Subscribe to users by filling out the following form. You will be
sent email requesting confirmation, to prevent others from
gratuitously subscribing you.".
-peter