Provide ability to change (at the farm or web app level) the "From" for any type of sharing email (i.e. providing or requesting access)
Currently, SharePoint Server 2016 sends the email on behalf of the user. This is "spoofing" and is blocked by our network. No sharing-type emails are being received by anyone in the company. If we had the option in Central Admin to switch it back to the generic SharePoint address (the one used by Alerts, for example), this would fix the issue.