Mass. Gen. Laws ch. 186, § 24
(e) If relief is sought because of recent or ongoing domestic violence, rape, sexual assault or stalking, an owner may request that proof be provided to show that a protective order or third-party verification is in effect or was obtained within the prior 3 months, or a tenant or co-tenant is reasonably in fear of imminent serious physical harm. Proof of status as a victim of domestic violence, rape, sexual assault or stalking shall be satisfied by production of any 1 of the following documents: