Nearly 11 Million Submission Endpoints on Port 587: The Mail Path That Is Rarely Reviewed

Nearly 11 Million Submission Endpoints on Port 587: The Mail Path That Is Rarely Reviewed A combined query for port 587 and the SMTP service fingerprint returned 10,990,138 records on 2026-09-26. Port 587 exists so that authenticated users can submit outbound mail, and that purpose is what makes it worth examining separately from inbound mail... Weiterlesen