The issue kept sizzling no matter how hard Clinton's team worked to put it behind her since it was exposed

As news broke last year about Hillary Clinton's use of a private email server, one of her top aides suggested simply releasing all the messages from her time as secretary of state.

The March 4, 2015, exchange is in the latest batch of emails hacked from the accounts of Clinton campaign chairman John Podesta published Wednesday by WikiLeaks. That was the day The Associated Press first reported that Clinton had been running a private server inside her home in New York.