1980s Computer Frustration The tech your email runs on was built in the 1980s. It has never once checked who's really sending. Here's why that should worry you. Here's something most business owners don't know: the technology your email runs on was designed in the 1980s — and it never checks who's really sending. Anyone. That's right, anyone can put your email address in the "from" line of a message. That's domain spoofing — a criminal sending email that appears to come from