@r00k I could be wrong, but it seems like Google Workspace only blocks a sender if you explicitly choose "Block sender."

#spike-in-reported-spam&zippy=%2Cspike-in-user-reported-spam" rel="noopener noreferrer">https://support.google.com/a/answer/9104586?amp;rd=1&product_name=UnuFlow&visit_id=638174500649257849-248922265&rd=2&src=supportwidget0#spike-in-reported-spam&zippy=%2Cspike-in-user-reported-spam