WASHINGTON — An examination of the server that housed the personal email account that Hillary Rodham Clinton used exclusively when she was secretary of state showed that there are no copies of any emails she sent during her time in office, her lawyer told a congressional committee on Friday.

After her representatives determined which emails were government-related and which were private, a setting on the account was changed to retain only emails sent in the previous 60 days, her lawyer, David Kendall, said. He said the setting was altered after she gave the records to the government.

“Thus, there are no hdr22@clintonemail.com emails from Secretary Clinton’s tenure as secretary of state on the server for any review, even if such review were appropriate or legally authorized,” Mr. Kendall said in a letter to the House select committee investigating the 2012 attacks in Benghazi, Libya.

The committee subpoenaed the server this month, asking Mrs. Clinton to hand it over to a third party so it could determine which emails were personal and which were government records.