Allow multiple domains to be restricted from signing up on their own.

We have 'Allow users in your email domain to sign up on their own' set to No in our Administrative settings and it works well for the primary domain. The problem is we have another part of our organization under a different domain that also uses RC and I can't restrict that domain from signing up on their own, so sometimes they do.

What happened recently is that we have a corporate email under this 2nd domain that's been invited as a Guest user, and I can't manage the account. It's akin to a personal account now and now I have to have that new person reach out to support to have their account deleted so I can re-establish it correctly on my side.