When did her server become classified? If it didn’t why not?
Her server became classified the second classified info was on it. Classified information DOES NOT have to have banners stating it’s classification. Anyone that has a clearance and knows anything classified can type up an email and send it knowing the information is classified or receive an email and know the actual information is classified. When that happens, any server and or computer the email is sent from and received becomes classified. Retrieving and destroying is damn near impossible...
If email is sent from or pulled from a classified network, then the email is classified with the proper heading i.e. (C) CONFIDENTIAL (S) SECRET etc. Classified documents have every paragraph preceded with the classification of that paragraph including (U) for UNCLASS. The (C) Clinton thought was a paragraph scheme like a, b, c is just more proof she’s an idiot.
The main question on that particular email is that it came from a classified computer and someone knowingly copied, scanned or sent it ti an unclassified system to send to Clinton. That’s a criminal charge.
The IT folks working her server probably wouldn’t know what’s classified or not but common sense would tell you working for the Secretary of State just about everything is “Sensitive” at the very least.
Never. Because it was her personal server -- and because HRC is too important for the Nation's security to concern her psychopathic ego.