Some punters said they could not get bets on as the TAB website came up with error messages close to the Cup at 5pm.
"The Melbourne Cup is much more than just a horse race, it's a 158-year-old social and cultural tradition that brings Australia and New Zealand to a standstill," says Racing Board chief executive John Allen.
"There has been a record amount of betting both online and in our TAB outlets. There was also great turnouts at our domestic meetings and the race itself delivered a real spectacle for viewer on top of an excellent programme of New Zealand racing."