We had an incident where a malicious actor squatted a client's domain, and then sent email on behalf of them, including to one of their customers, who is also a client of ours.

We'd like the ability though Huntress ITDR to be able to add a domain to the tenant allow / block lists universally across all client orgs. Right now, this has to be done tenant by tenant manually by logging into each customer's 365 tenant.