Was that one of the home brew servers, do you know?
I don’t know. This is what it says on the FOIA site:
Secretary Clinton Emails
In December 2014, former Secretary Hillary Rodham Clinton provided the Department with emails that were sent or received by her while she was Secretary of State.
The Department conducted a Freedom of Information Act (FOIA) review of all emails provided by former Secretary Hillary Rodham Clinton. Starting in June 2015, a new set of emails from this collection was released on this site at the end of each month. These monthly releases continued until the entire collection of records was reviewed for public release. All releasable records are now available on this site.
In May 2015, the Department released a set of 296 of these documents which previously had been provided in February 2015 to the House Select Committee on Benghazi. All 296 documents originally released in May’s production were re-produced within the subsequent productions.
All documents are fully searchable.