subscription requests should send to listname-owner for owners and listname-moderators for moderators
Right now subscription requests go to all moderators and owners but the email is To: listname-owners. It might be nicer to send moderator emails to a listname-moderator alias so it's clear that you are getting that email as a moderator.
If for example someone is listed as a moderator and an owner, they get 2 emails to listname-owners.
See: https://pagure.io/fedora-infrastructure/issue/6000 for more info.