Hillary Clinton who served as the 67th United States Secretary of State, under President Barack Obama, used what type of email server for official communications, rather than official State Department email accounts maintained on federal secure servers?
her family's private email server
Title: Clinton family
Passage: The Clinton family is a prominent American political family related to Bill Clinton, the 42nd President of the United States (1993–2001), and his wife Hillary Clinton, the 67th United States Secretary of State (2009–13), Senator from New York (2001–09) and the First Lady of the United States (1993–2001).  Their immediate family was the First Family of the United States from 1993 to 2001.  In 2016, Hillary Clinton became the first female presidential nominee from a major political party in United States history.  The Clintons (Bill and Hillary) are the first married couple to each be nominated for president.  She was defeated in the election by businessman Donald Trump.
Title: Hillary Clinton email controversy
Passage: In March 2015, it became publicly known that Hillary Clinton, during her tenure as United States Secretary of State, had used her family's private email server for official communications, rather than official State Department email accounts maintained on federal secure servers.  Those official communications included over 100 emails which contained classified information at the time they were sent, as well as nearly 2,100 emails which were not marked classified but would retroactively be ranked as classified by the State Department.
Title: Hillary Clinton's tenure as Secretary of State
Passage: Hillary Clinton served as the 67th United States Secretary of State, under President Barack Obama, from 2009 to 2013, overseeing the department that conducted the Foreign policy of Barack Obama.
Hillary Clinton email controversy Hillary Clinton's tenure as Secretary of State